21-17=2(x-8)

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Solution for 21-17=2(x-8) equation: 



21-17=2(x-8)

We move all terms to the left:

21-17-(2(x-8))=0

We add all the numbers together, and all the variables

-(2(x-8))+4=0



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

2(x-8)

We multiply parentheses

2x-16

Back to the equation:

-(2x-16)



We get rid of parentheses

-2x+16+4=0

We add all the numbers together, and all the variables

-2x+20=0

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

-2x=-20

x=-20/-2

x=+10

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