84=3(z+13)

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Solution for 84=3(z+13) equation: 



84=3(z+13)

We move all terms to the left:

84-(3(z+13))=0



We calculate terms in parentheses: -(3(z+13)), so:

3(z+13)

We multiply parentheses

3z+39

Back to the equation:

-(3z+39)



We get rid of parentheses

-3z-39+84=0

We add all the numbers together, and all the variables

-3z+45=0

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

-3z=-45

z=-45/-3

z=+15

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