15x-x-2x=120+2x

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Solution for 15x-x-2x=120+2x equation: 



15x-x-2x=120+2x

We move all terms to the left:

15x-x-2x-(120+2x)=0

We add all the numbers together, and all the variables

15x-x-2x-(2x+120)=0

We add all the numbers together, and all the variables

12x-(2x+120)=0

We get rid of parentheses

12x-2x-120=0

We add all the numbers together, and all the variables

10x-120=0

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

10x=120

x=120/10

x=12

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