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Parentheses (can) save lives
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Yeah they can and if you actually pay attention to math its 1
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No, the P is first in PEMDAS. So you do whatever is in the parentheses first. Then you do Multiplication/Division, from left to right, and Addition/Subtraction from left to right. 6÷1 (1+2) Do the parentheses 6÷2 (3) Then divide, because the divide sign is on the left of the problem. 3 (3) Multiply 9.