-5(x+3)=-(x-7)=-20

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Solution for -5(x+3)=-(x-7)=-20 equation: 



-5(x+3)=-(x-7)=-20

We move all terms to the left:

-5(x+3)-(-(x-7))=0

We multiply parentheses

-5x-(-(x-7))-15=0



We calculate terms in parentheses: -(-(x-7)), so:

-(x-7)

We get rid of parentheses

-x+7

We add all the numbers together, and all the variables

-1x+7

Back to the equation:

-(-1x+7)



We get rid of parentheses

-5x+1x-7-15=0

We add all the numbers together, and all the variables

-4x-22=0

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

-4x=22

x=22/-4

x=-5+1/2

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