15-3n=7-n

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



15-3n=7-n

We move all terms to the left:

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

We add all the numbers together, and all the variables

-3n-(-1n+7)+15=0

We get rid of parentheses

-3n+1n-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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