4(n+9)=120

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Solution for 4(n+9)=120 equation: 



4(n+9)=120

We move all terms to the left:

4(n+9)-(120)=0

We multiply parentheses

4n+36-120=0

We add all the numbers together, and all the variables

4n-84=0

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

4n=84

n=84/4

n=21

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