n+3(3n+4)=42

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Solution for n+3(3n+4)=42 equation: 



n+3(3n+4)=42

We move all terms to the left:

n+3(3n+4)-(42)=0

We multiply parentheses

n+9n+12-42=0

We add all the numbers together, and all the variables

10n-30=0

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

10n=30

n=30/10

n=3

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