12-15=12+n

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Solution for 12-15=12+n equation: 



12-15=12+n

We move all terms to the left:

12-15-(12+n)=0

We add all the numbers together, and all the variables

-(n+12)+12-15=0

We add all the numbers together, and all the variables

-(n+12)-3=0

We get rid of parentheses

-n-12-3=0

We add all the numbers together, and all the variables

-1n-15=0

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

-n=15

n=15/-1

n=-15

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