7n+2(n+2)=31

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Solution for 7n+2(n+2)=31 equation: 



7n+2(n+2)=31

We move all terms to the left:

7n+2(n+2)-(31)=0

We multiply parentheses

7n+2n+4-31=0

We add all the numbers together, and all the variables

9n-27=0

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

9n=27

n=27/9

n=3

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