-640=-10(7x-27)

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Solution for -640=-10(7x-27) equation: 



-640=-10(7x-27)

We move all terms to the left:

-640-(-10(7x-27))=0



We calculate terms in parentheses: -(-10(7x-27)), so:

-10(7x-27)

We multiply parentheses

-70x+270

Back to the equation:

-(-70x+270)



We get rid of parentheses

70x-270-640=0

We add all the numbers together, and all the variables

70x-910=0

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

70x=910

x=910/70

x=13

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