n+9=-3n-7

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Solution for n+9=-3n-7 equation: 



n+9=-3n-7

We move all terms to the left:

n+9-(-3n-7)=0

We get rid of parentheses

n+3n+7+9=0

We add all the numbers together, and all the variables

4n+16=0

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

4n=-16

n=-16/4

n=-4

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