10-1+1=10 only if you don’t the addition first 1 + 1 = 2 - 10 = 8

Nope, gives 10 in any order. 10+1-1=11-1=10 <== addition first. Accountants would have a nightmare if order mattered.

which was my mistake, which I already stated.

No, your mistake was adding brackets, 10-(1+1) ISN’T how to do addition first. 10+1-1 is. Ask an accountant! 😂

I see you still didn’t try it on a calculator yet then