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

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



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

We move all terms to the left:

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



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

-2(-8x+3)

We multiply parentheses

16x-6

Back to the equation:

-(16x-6)



We get rid of parentheses

x-16x+6-21=0

We add all the numbers together, and all the variables

-15x-15=0

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

-15x=15

x=15/-15

x=-1

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