-84=-2(x+7)-8x

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Solution for -84=-2(x+7)-8x equation: 



-84=-2(x+7)-8x

We move all terms to the left:

-84-(-2(x+7)-8x)=0



We calculate terms in parentheses: -(-2(x+7)-8x), so:

-2(x+7)-8x

We add all the numbers together, and all the variables

-8x-2(x+7)

We multiply parentheses

-8x-2x-14

We add all the numbers together, and all the variables

-10x-14

Back to the equation:

-(-10x-14)



We get rid of parentheses

10x+14-84=0

We add all the numbers together, and all the variables

10x-70=0

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

10x=70

x=70/10

x=7

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