n+7+n+3+n+2+n=40

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Solution for n+7+n+3+n+2+n=40 equation: 



n+7+n+3+n+2+n=40

We move all terms to the left:

n+7+n+3+n+2+n-(40)=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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