90=5(5n-7)

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Solution for 90=5(5n-7) equation: 



90=5(5n-7)

We move all terms to the left:

90-(5(5n-7))=0



We calculate terms in parentheses: -(5(5n-7)), so:

5(5n-7)

We multiply parentheses

25n-35

Back to the equation:

-(25n-35)



We get rid of parentheses

-25n+35+90=0

We add all the numbers together, and all the variables

-25n+125=0

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

-25n=-125

n=-125/-25

n=+5

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