6x(5+7)/4-7x2+3x3
i am using PEMDAS and coming up with -5 but the right answer according to the TEAS Test book that I am studying is 13. Please explain why that this is the right answer.

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6x(5+7)/4-7x2+3x3
= 6x(12)/4-14+9
=18-14+9
=13

So if subtraction comes first instead of the addition you do it ?

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