4n-(-7n-8)=-13+8n

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Solution for 4n-(-7n-8)=-13+8n equation: 



4n-(-7n-8)=-13+8n

We move all terms to the left:

4n-(-7n-8)-(-13+8n)=0

We add all the numbers together, and all the variables

4n-(-7n-8)-(8n-13)=0

We get rid of parentheses

4n+7n-8n+8+13=0

We add all the numbers together, and all the variables

3n+21=0

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

3n=-21

n=-21/3

n=-7

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