9-2n=7n

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Solution for 9-2n=7n equation: 



9-2n=7n

We move all terms to the left:

9-2n-(7n)=0

We add all the numbers together, and all the variables

-9n+9=0

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

-9n=-9

n=-9/-9

n=1

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