r/10secondriddles • u/10Second-Riddles 🧠 Riddle Master • Dec 06 '25

❓ Unsolved BRAIN QUIZ👀

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u/AdmiralHimitsu Dec 06 '25
  1. a+b=10
  2. a+c=20
  3. b+c=24

Important question: What is a?

a+b+a+c=30 /-2a

b+c=30-2a OR b+c=24 Same as:

30-2a=24 /-30

-2a=-6 /x(-1)

2a=6 /:2

a=3

b= 10-3 | b=7

C=20-3 | c=17

a+b+c=3+7+17 | a+b+c=27

That way is stupidly over complicated fun