2n+7n=30

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Solution for 2n+7n=30 equation: 



2n+7n=30

We move all terms to the left:

2n+7n-(30)=0

We add all the numbers together, and all the variables

9n-30=0

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

9n=30

n=30/9

n=3+1/3

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