7n-9n=7

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Solution for 7n-9n=7 equation: 



7n-9n=7

We move all terms to the left:

7n-9n-(7)=0

We add all the numbers together, and all the variables

-2n-7=0

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

-2n=7

n=7/-2

n=-3+1/2

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