15=-5(z+7)

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Solution for 15=-5(z+7) equation: 



15=-5(z+7)

We move all terms to the left:

15-(-5(z+7))=0



We calculate terms in parentheses: -(-5(z+7)), so:

-5(z+7)

We multiply parentheses

-5z-35

Back to the equation:

-(-5z-35)



We get rid of parentheses

5z+35+15=0

We add all the numbers together, and all the variables

5z+50=0

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

5z=-50

z=-50/5

z=-10

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