3(n+7)=42

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Solution for 3(n+7)=42 equation: 



3(n+7)=42

We move all terms to the left:

3(n+7)-(42)=0

We multiply parentheses

3n+21-42=0

We add all the numbers together, and all the variables

3n-21=0

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

3n=21

n=21/3

n=7

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