-7n+15+3n=55

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Solution for -7n+15+3n=55 equation: 



-7n+15+3n=55

We move all terms to the left:

-7n+15+3n-(55)=0

We add all the numbers together, and all the variables

-4n-40=0

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

-4n=40

n=40/-4

n=-10

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