2(n+7)=+21

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Solution for 2(n+7)=+21 equation: 



2(n+7)=+21

We move all terms to the left:

2(n+7)-(+21)=0

We add all the numbers together, and all the variables

2(n+7)-21=0

We multiply parentheses

2n+14-21=0

We add all the numbers together, and all the variables

2n-7=0

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

2n=7

n=7/2

n=3+1/2

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