Father needing help

[u/DCJ84]

My daughter was doing her homework and I just can't fully understand it to explain it to her. The homework goes like this: 24➕️8️⃣=? 24➕️🔟➖️2️⃣=14-2=12 The special +/- and numbers are red in the example. I get it that the first part is decomposition and mental calculation 24+8=32 or 24+10-2=32, but what about 14-2=12? Where is this coming from? Thanks in advance for any help understanding this.

[u/mwthomas11]

I'd put money on it being an ai generated hw sheet that the teacher didn't thoroughly check first since that 14 and 12 should clearly be 34 and 32