90=5(z+9)

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Solution for 90=5(z+9) equation: 



90=5(z+9)

We move all terms to the left:

90-(5(z+9))=0



We calculate terms in parentheses: -(5(z+9)), so:

5(z+9)

We multiply parentheses

5z+45

Back to the equation:

-(5z+45)



We get rid of parentheses

-5z-45+90=0

We add all the numbers together, and all the variables

-5z+45=0

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

-5z=-45

z=-45/-5

z=+9

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