-21=-(2x-3)-8(x+8)

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Solution for -21=-(2x-3)-8(x+8) equation: 



-21=-(2x-3)-8(x+8)

We move all terms to the left:

-21-(-(2x-3)-8(x+8))=0



We calculate terms in parentheses: -(-(2x-3)-8(x+8)), so:

-(2x-3)-8(x+8)

We multiply parentheses

-(2x-3)-8x-64

We get rid of parentheses

-2x-8x+3-64

We add all the numbers together, and all the variables

-10x-61

Back to the equation:

-(-10x-61)



We get rid of parentheses

10x+61-21=0

We add all the numbers together, and all the variables

10x+40=0

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

10x=-40

x=-40/10

x=-4

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