(-x)+7=(-4x)-20

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Solution for (-x)+7=(-4x)-20 equation: 



(-x)+7=(-4x)-20

We move all terms to the left:

(-x)+7-((-4x)-20)=0

We add all the numbers together, and all the variables

(-1x)-((-4x)-20)+7=0

We get rid of parentheses

-1x-((-4x)-20)+7=0



We calculate terms in parentheses: -((-4x)-20), so:

(-4x)-20

We get rid of parentheses

-4x-20

Back to the equation:

-(-4x-20)



We get rid of parentheses

-1x+4x+20+7=0

We add all the numbers together, and all the variables

3x+27=0

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

3x=-27

x=-27/3

x=-9

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