3(a-4)=120

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Solution for 3(a-4)=120 equation: 



3(a-4)=120

We move all terms to the left:

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

We multiply parentheses

3a-12-120=0

We add all the numbers together, and all the variables

3a-132=0

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

3a=132

a=132/3

a=44

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