-20+n=-7n+4(n+2)

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Solution for -20+n=-7n+4(n+2) equation: 



-20+n=-7n+4(n+2)

We move all terms to the left:

-20+n-(-7n+4(n+2))=0



We calculate terms in parentheses: -(-7n+4(n+2)), so:

-7n+4(n+2)

We multiply parentheses

-7n+4n+8

We add all the numbers together, and all the variables

-3n+8

Back to the equation:

-(-3n+8)



We get rid of parentheses

n+3n-8-20=0

We add all the numbers together, and all the variables

4n-28=0

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

4n=28

n=28/4

n=7

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