3x-18=120

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Solution for 3x-18=120 equation: 



3x-18=120

We move all terms to the left:

3x-18-(120)=0

We add all the numbers together, and all the variables

3x-138=0

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

3x=138

x=138/3

x=46

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