15=7+2n

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Solution for 15=7+2n equation: 



15=7+2n

We move all terms to the left:

15-(7+2n)=0

We add all the numbers together, and all the variables

-(2n+7)+15=0

We get rid of parentheses

-2n-7+15=0

We add all the numbers together, and all the variables

-2n+8=0

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

-2n=-8

n=-8/-2

n=+4

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