-15=3(z-84)

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Solution for -15=3(z-84) equation: 



-15=3(z-84)

We move all terms to the left:

-15-(3(z-84))=0



We calculate terms in parentheses: -(3(z-84)), so:

3(z-84)

We multiply parentheses

3z-252

Back to the equation:

-(3z-252)



We get rid of parentheses

-3z+252-15=0

We add all the numbers together, and all the variables

-3z+237=0

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

-3z=-237

z=-237/-3

z=+79

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