-7n+3n=12-7n

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



-7n+3n=12-7n

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We add all the numbers together, and all the variables

-4n-(-7n+12)=0

We get rid of parentheses

-4n+7n-12=0

We add all the numbers together, and all the variables

3n-12=0

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

3n=12

n=12/3

n=4

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