Mohammad Islam K.

asked • 09/05/12
12-7*6+19-14=11
please tell me the method to put the parentheses at the right places

2 Answers By Expert Tutors

You want to think about order of operations - PEMDAS. Since you are working toward a result, I would just do guess and check. It's a tricky one! You will need nested sets...paratheses within paratheses.

Add the parentheses based on highest order of operation, then left to right.

example:

4-3*7-12/6+2 = x
4-(3*7)-(12/6)+2 = x Multiplication and division are higher order than add and subtract, but the same as each other so they are left to right.
(((4-(3*7))-(12/6))+2) Addition and subtraction are the same order of precedence so they are just done left to right.
Hope this example helps,

Steven P.

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