this post was submitted on 27 Nov 2025
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You don't necessarily have to do parentheses first. What matters is that the things inside the parentheses are a group that you can't break apart. If you have
10÷2+3-2*(2+1)you can do the division first5+3-2*(2+1)then the addition outside the parentheses8-2*(2+1)It's just that before you do the multiplication of the term outside the parentheses, you have to handle the parentheses group, so you get8-2*3->8-6->2