-40+8k=-8(-7-7k)

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Solution for -40+8k=-8(-7-7k) equation: 



-40+8k=-8(-7-7k)

We move all terms to the left:

-40+8k-(-8(-7-7k))=0

We add all the numbers together, and all the variables

8k-(-8(-7k-7))-40=0



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

-8(-7k-7)

We multiply parentheses

56k+56

Back to the equation:

-(56k+56)



We get rid of parentheses

8k-56k-56-40=0

We add all the numbers together, and all the variables

-48k-96=0

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

-48k=96

k=96/-48

k=-2

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