-9x+21=-2(x-7)

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Solution for -9x+21=-2(x-7) equation: 



-9x+21=-2(x-7)

We move all terms to the left:

-9x+21-(-2(x-7))=0



We calculate terms in parentheses: -(-2(x-7)), so:

-2(x-7)

We multiply parentheses

-2x+14

Back to the equation:

-(-2x+14)



We get rid of parentheses

-9x+2x-14+21=0

We add all the numbers together, and all the variables

-7x+7=0

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

-7x=-7

x=-7/-7

x=1

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