3(n+4)=138

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Solution for 3(n+4)=138 equation: 



3(n+4)=138

We move all terms to the left:

3(n+4)-(138)=0

We multiply parentheses

3n+12-138=0

We add all the numbers together, and all the variables

3n-126=0

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

3n=126

n=126/3

n=42

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