--18=15z-9(2z-2)

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Solution for --18=15z-9(2z-2) equation: 



--18=15z-9(2z-2)

We move all terms to the left:

--18-(15z-9(2z-2))=0

We add all the numbers together, and all the variables

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



We calculate terms in parentheses: -(15z-9(2z-2)), so:

15z-9(2z-2)

We multiply parentheses

15z-18z+18

We add all the numbers together, and all the variables

-3z+18

Back to the equation:

-(-3z+18)



We get rid of parentheses

3z-18=0

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

3z=18

z=18/3

z=6

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