3z=91-(z+7)

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Solution for 3z=91-(z+7) equation: 



3z=91-(z+7)

We move all terms to the left:

3z-(91-(z+7))=0



We calculate terms in parentheses: -(91-(z+7)), so:

91-(z+7)

determiningTheFunctionDomain
-(z+7)+91

We get rid of parentheses

-z-7+91

We add all the numbers together, and all the variables

-1z+84

Back to the equation:

-(-1z+84)



We get rid of parentheses

3z+1z-84=0

We add all the numbers together, and all the variables

4z-84=0

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

4z=84

z=84/4

z=21

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