x-3x=-4x-12

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Solution for x-3x=-4x-12 equation: 



x-3x=-4x-12

We move all terms to the left:

x-3x-(-4x-12)=0

We add all the numbers together, and all the variables

-2x-(-4x-12)=0

We get rid of parentheses

-2x+4x+12=0

We add all the numbers together, and all the variables

2x+12=0

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

2x=-12

x=-12/2

x=-6

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