15=-2(9z-4)

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Solution for 15=-2(9z-4) equation: 



15=-2(9z-4)

We move all terms to the left:

15-(-2(9z-4))=0



We calculate terms in parentheses: -(-2(9z-4)), so:

-2(9z-4)

We multiply parentheses

-18z+8

Back to the equation:

-(-18z+8)



We get rid of parentheses

18z-8+15=0

We add all the numbers together, and all the variables

18z+7=0

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

18z=-7

z=-7/18

z=-7/18

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