9n-2=7n+20

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Solution for 9n-2=7n+20 equation: 



9n-2=7n+20

We move all terms to the left:

9n-2-(7n+20)=0

We get rid of parentheses

9n-7n-20-2=0

We add all the numbers together, and all the variables

2n-22=0

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

2n=22

n=22/2

n=11

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