15=2z-(-7)

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Solution for 15=2z-(-7) equation: 



15=2z-(-7)

We move all terms to the left:

15-(2z-(-7))=0



We calculate terms in parentheses: -(2z-(-7)), so:

2z-(-7)

We add all the numbers together, and all the variables

2z+7

Back to the equation:

-(2z+7)



We get rid of parentheses

-2z-7+15=0

We add all the numbers together, and all the variables

-2z+8=0

We move all terms containing z to the left, all other terms to the right

-2z=-8

z=-8/-2

z=+4

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