-2x+21=-7(x-8)

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Solution for -2x+21=-7(x-8) equation: 



-2x+21=-7(x-8)

We move all terms to the left:

-2x+21-(-7(x-8))=0



We calculate terms in parentheses: -(-7(x-8)), so:

-7(x-8)

We multiply parentheses

-7x+56

Back to the equation:

-(-7x+56)



We get rid of parentheses

-2x+7x-56+21=0

We add all the numbers together, and all the variables

5x-35=0

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

5x=35

x=35/5

x=7

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