9n+57=7n-2(n-2)

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Solution for 9n+57=7n-2(n-2) equation: 



9n+57=7n-2(n-2)

We move all terms to the left:

9n+57-(7n-2(n-2))=0



We calculate terms in parentheses: -(7n-2(n-2)), so:

7n-2(n-2)

We multiply parentheses

7n-2n+4

We add all the numbers together, and all the variables

5n+4

Back to the equation:

-(5n+4)



We get rid of parentheses

9n-5n-4+57=0

We add all the numbers together, and all the variables

4n+53=0

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

4n=-53

n=-53/4

n=-13+1/4

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