9n+7=7n+15

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Solution for 9n+7=7n+15 equation: 



9n+7=7n+15

We move all terms to the left:

9n+7-(7n+15)=0

We get rid of parentheses

9n-7n-15+7=0

We add all the numbers together, and all the variables

2n-8=0

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

2n=8

n=8/2

n=4

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