91=7(z-85)

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Solution for 91=7(z-85) equation: 



91=7(z-85)

We move all terms to the left:

91-(7(z-85))=0



We calculate terms in parentheses: -(7(z-85)), so:

7(z-85)

We multiply parentheses

7z-595

Back to the equation:

-(7z-595)



We get rid of parentheses

-7z+595+91=0

We add all the numbers together, and all the variables

-7z+686=0

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

-7z=-686

z=-686/-7

z=+98

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