-140=-7(-2a+8)

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Solution for -140=-7(-2a+8) equation: 



-140=-7(-2a+8)

We move all terms to the left:

-140-(-7(-2a+8))=0



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

-7(-2a+8)

We multiply parentheses

14a-56

Back to the equation:

-(14a-56)



We get rid of parentheses

-14a+56-140=0

We add all the numbers together, and all the variables

-14a-84=0

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

-14a=84

a=84/-14

a=-6

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