7n+8=9n-4

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Solution for 7n+8=9n-4 equation: 



7n+8=9n-4

We move all terms to the left:

7n+8-(9n-4)=0

We get rid of parentheses

7n-9n+4+8=0

We add all the numbers together, and all the variables

-2n+12=0

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

-2n=-12

n=-12/-2

n=+6

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