20*(x-3)=120

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Solution for 20*(x-3)=120 equation: 



20(x-3)=120

We move all terms to the left:

20(x-3)-(120)=0

We multiply parentheses

20x-60-120=0

We add all the numbers together, and all the variables

20x-180=0

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

20x=180

x=180/20

x=9

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