120=4(5n-5)

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Solution for 120=4(5n-5) equation: 



120=4(5n-5)

We move all terms to the left:

120-(4(5n-5))=0



We calculate terms in parentheses: -(4(5n-5)), so:

4(5n-5)

We multiply parentheses

20n-20

Back to the equation:

-(20n-20)



We get rid of parentheses

-20n+20+120=0

We add all the numbers together, and all the variables

-20n+140=0

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

-20n=-140

n=-140/-20

n=+7

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