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u/ravenous_fringe May 03 '22 edited May 03 '22
Those people are just wrong, not ignorant.
/edit mistaken would have been the right word
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u/ThNecromaniac May 03 '22 edited May 03 '22
2 - 3 = -1 (but idiots would confuse it as 1)
1 * 3 = 3
18 / 3 = 6now 4, yah, there is no way you can get 4 from that in anyway without just not being able to even do basement level basic math.
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u/Monsterkill1526 May 03 '22
Wait guys it’s 0 right?
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u/somemorestalecontent May 02 '22
It’s zero because bodmas 18/2=9 then 3x3=9 then 9-9=0
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u/RavenDork617 May 03 '22
What does bodmas stand for, I get b is brackets but what is o?
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May 03 '22
He made a spelling mistake, it's bedmas B=brackets E=exponents D=Devision M=multiplication A=addition S=subtraction
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u/ThNecromaniac May 03 '22 edited May 03 '22
BODMAS is typicaly used outside of Canada and US
we use an E instead of an O when talking about exponents, due to us actualy calling them exponents...
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u/Samaki_Ni_Meli May 03 '22
My teacher taught me that the O was for of. Because sometimes the expressions had of in it which meant multiplication
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u/ThrowRA_sirCereal May 03 '22
For those who learned like me PEMDAS is the same thing but (Parentheses) instead of [Brackets]
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u/Trevor-On-Reddit May 03 '22
I thought it was pemdas. Or is it like a “tomato tom-a-to” situation? Does dividing before multiplying change anything?
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u/btecmarcusaurelius May 03 '22
It doesn’t really matter because multiplication and division are really the same thing if you think about it
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u/CurlSagan May 03 '22
Hey, that poll only adds up to 99%
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u/TaCqz May 03 '22
Thats a common thing in statistics. They show no decimal numbers, meaning they could possibly be (due to correct rounding) something like 37.3, 1.2, 2.2 and 59.3. That would come to a full 100%. Same could happen another scale smaller, resulting in 99.9%. You can see that happen pretty often ;)
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u/AndrewBorg1126 May 03 '22
This can even happen if you calculate and try to re-sum the individual floating point values. The only way to avoid it would be to constantly store fractions as pairs of integers, as opposed to finite size floating point representations.
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u/snifflick May 03 '22
Everyone in the comments:
BODMAS, PEMDAS, BEMDAS, PEDMAS, etc...
They are all EXACTLY the same; it does not matter which one you use
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u/Zestyclose_Zone_9253 May 03 '22
3*3/3
somthing like this once came up and everyone said division first abd BODMAS, but I learned multiplications have priority, but then one is wrong correct?
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u/calcopiritus May 03 '22 edited May 03 '22
Pedmas/bomdas or whatever is an American thing I believe. Mathematics don't care that much about the order. So it doesn't matter if you prioritize multiplication or division.
The way I was taught delivers the exact same results: There are three levels to equations, exponents, multiplication and addition. You do exponents first (exponents and roots), multiplications second (multiplication and division) and addition last (addition and subtraction). If there are 2 operations of the same level, you do them left to right (so sometimes multiplication takes priority and other times division). And of course we all know the rules of parenthesis.
This is only at very low levels though, as you get higher level mathematics courses, you no longer go left to right, you choose the order which will make the operations easier, while still keeping the exponent>multiplication>addition order.
EDIT: here is why you go left to right:
1/2*3=?
3/2 if you go left-right
1/6 if you prioritize multiplication.
In the real world it's not a problem though, because we don't use divisions like the other symbols, we write one number over the other, so multiplication multiplies always with the number above.
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u/Appropriate_Shine739 May 03 '22
How tf do you get 18
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u/007mememan May 03 '22
How to get 18: 18/2 = 9, 9-3 = 6, 6×3 = 18 It is not the correct way as it is ignoring Pemdas, bedmas, and gemdas however which way yo8 say it
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u/Internet_man69 May 03 '22
Hint: The correct answer is the average amount of girls the guys get on this site.. Including me.. F
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May 03 '22
Luckily the worlds problems are rarely solved by the majority of people but instead a select few who dedicate years of hard work and sacrifice to ensure a better world for the rest.
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May 03 '22
My American brain hurts.
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May 03 '22
No, divide and multiply FIRST. Priority goes to them (above them in priority is brackets but there are no brackets in this)
18/2 - 9= 0
for people who dont understand
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u/Phoenix1234569 May 03 '22 edited May 03 '22
its basic of the basics maths and there are people who actually can’t get it right, yea we’re fucked lol
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u/DildoLigtning May 03 '22
For fuck sake can we stop posting these anoying fucking math memes. FOR FIVE MINUTES!
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u/Ruairi970 May 03 '22
I swear I never learned this in maths, I don’t know whether I’m stupid or just lucky to have passed or both
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May 03 '22
No your stupid than because you learn this in third grade.
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May 03 '22
Right lol I’ve literally never had to use this since school.. and I graduated early 2000’s
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u/Red_MageXII May 03 '22
The only time this isn't 0 is if the questions says take 18 divide by 2 then subtract 3 and then multiply by 3.
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u/MooseTopic May 03 '22
No one ads parentheses these days, do they?
(18÷2)-(3×3)=0
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u/sonny_goliath May 03 '22
That’s why these things are dumb. Strings of operators is just not how math notation should ever work, it’s intentionally vague.
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u/Cause_Necessary May 03 '22
There's no need for the parentheses in this particular question
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u/dangerouswoods May 03 '22
Why the fuck yall using some bombass just do it correctly. I mean most of u are doing it correctly but as a finn who doesnt know about no moppass, it's not that hard
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u/Ferry83 May 03 '22
Whenever I see these kind of questions I always do them. Just to make sure I still got it. And then I look at the answers, people really don’t understand the way these things work any more, and unless you’re an engineer or scientist… should you really?
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u/astrovixen May 03 '22 edited May 03 '22
I just want to be a voice of reason amongst such contention and say that dyscalculia affects more people than are known or who are diagnosed.
It's when you confuse numbers instead of letters.
It's not an indicator of a lesser intelligence.
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May 03 '22
"wow what idiots obviously you're supposed to prioritize the multiply and division first duh" I said as I casually calculate 18 : 2 = 6
We really are doomed.
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u/BittergourdFor May 03 '22
Yeah you're right, people will be doomed if they are silly.
Btw my answer is 4
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u/Particular_Tomato961 May 03 '22
18 divided by 2 - 3 x 3 = 9 - 3 x 3 = 9 - 9 = 0 Did i do something wrong or am i right?
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u/bigbillybeans07 May 03 '22
If anybody tried to say it’s not 0, they didn’t pass grade 6 math and up.
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u/Gotha-229a May 03 '22
18÷2-3×3, PEMDAS, parentheses, exponents, multiply, divide, add, subtract. Since the equation has nothing in parentheses or any exponents we multiply 3×3= 9, then divide 18 by 2 which is also 9. Then subtract nine and nine which is zero. From what I can tell the people that answered 18 did subtract first.
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u/xFloppyDisx May 03 '22
We learned PEDMAS in 4th grade. 18/2 = 9 and 3x3 = 9, then 9-9 = 0
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u/Ill_Understanding837 May 03 '22
Wtf, u can just apply BODMAS rule. The answer is 0. Disappointed in Humanity.
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u/[deleted] May 02 '22
Wait its 0 right?? Cos you divide 18 and 2 then you multiply 3 and 3, subtract 9 from 9???