2x-72=x+3x

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Solution for 2x-72=x+3x equation: 



2x-72=x+3x

We move all terms to the left:

2x-72-(x+3x)=0

We add all the numbers together, and all the variables

2x-(+4x)-72=0

We get rid of parentheses

2x-4x-72=0

We add all the numbers together, and all the variables

-2x-72=0

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

-2x=72

x=72/-2

x=-36

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