140=-7(-3k-8)

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Solution for 140=-7(-3k-8) equation: 



140=-7(-3k-8)

We move all terms to the left:

140-(-7(-3k-8))=0



We calculate terms in parentheses: -(-7(-3k-8)), so:

-7(-3k-8)

We multiply parentheses

21k+56

Back to the equation:

-(21k+56)



We get rid of parentheses

-21k-56+140=0

We add all the numbers together, and all the variables

-21k+84=0

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

-21k=-84

k=-84/-21

k=+4

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