3n-12=7n+8

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Solution for 3n-12=7n+8 equation: 



3n-12=7n+8

We move all terms to the left:

3n-12-(7n+8)=0

We get rid of parentheses

3n-7n-8-12=0

We add all the numbers together, and all the variables

-4n-20=0

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

-4n=20

n=20/-4

n=-5

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