x+(-3x)=-4

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Solution for x+(-3x)=-4 equation: 



x+(-3x)=-4

We move all terms to the left:

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

We add all the numbers together, and all the variables

x+(-3x)+4=0

We get rid of parentheses

x-3x+4=0

We add all the numbers together, and all the variables

-2x+4=0

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

-2x=-4

x=-4/-2

x=+2

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