124=-7k+5(-7k+8)

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Solution for 124=-7k+5(-7k+8) equation: 



124=-7k+5(-7k+8)

We move all terms to the left:

124-(-7k+5(-7k+8))=0



We calculate terms in parentheses: -(-7k+5(-7k+8)), so:

-7k+5(-7k+8)

We multiply parentheses

-7k-35k+40

We add all the numbers together, and all the variables

-42k+40

Back to the equation:

-(-42k+40)



We get rid of parentheses

42k-40+124=0

We add all the numbers together, and all the variables

42k+84=0

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

42k=-84

k=-84/42

k=-2

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