3n+12=n+7

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Solution for 3n+12=n+7 equation: 



3n+12=n+7

We move all terms to the left:

3n+12-(n+7)=0

We get rid of parentheses

3n-n-7+12=0

We add all the numbers together, and all the variables

2n+5=0

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

2n=-5

n=-5/2

n=-2+1/2

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