-4=(-x)+2x

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Solution for -4=(-x)+2x equation: 



-4=(-x)+2x

We move all terms to the left:

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

We add all the numbers together, and all the variables

-((-1x)+2x)-4=0



We calculate terms in parentheses: -((-1x)+2x), so:

(-1x)+2x

We add all the numbers together, and all the variables

2x+(-1x)

We get rid of parentheses

2x-1x

We add all the numbers together, and all the variables

x

Back to the equation:

-(x)



We add all the numbers together, and all the variables

-1x-4=0

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

-x=4

x=4/-1

x=-4

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