5(a-4)=120

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Solution for 5(a-4)=120 equation: 



5(a-4)=120

We move all terms to the left:

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

We multiply parentheses

5a-20-120=0

We add all the numbers together, and all the variables

5a-140=0

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

5a=140

a=140/5

a=28

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