-5n+7n=12-n

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Solution for -5n+7n=12-n equation: 



-5n+7n=12-n

We move all terms to the left:

-5n+7n-(12-n)=0

We add all the numbers together, and all the variables

-5n+7n-(-1n+12)=0

We add all the numbers together, and all the variables

2n-(-1n+12)=0

We get rid of parentheses

2n+1n-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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