680=-8(10x-5)

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Solution for 680=-8(10x-5) equation: 



680=-8(10x-5)

We move all terms to the left:

680-(-8(10x-5))=0



We calculate terms in parentheses: -(-8(10x-5)), so:

-8(10x-5)

We multiply parentheses

-80x+40

Back to the equation:

-(-80x+40)



We get rid of parentheses

80x-40+680=0

We add all the numbers together, and all the variables

80x+640=0

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

80x=-640

x=-640/80

x=-8

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