4(3a+9)=120

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Solution for 4(3a+9)=120 equation: 



4(3a+9)=120

We move all terms to the left:

4(3a+9)-(120)=0

We multiply parentheses

12a+36-120=0

We add all the numbers together, and all the variables

12a-84=0

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

12a=84

a=84/12

a=7

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