-7-7k=-4(7k+7)

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Solution for -7-7k=-4(7k+7) equation: 



-7-7k=-4(7k+7)

We move all terms to the left:

-7-7k-(-4(7k+7))=0



We calculate terms in parentheses: -(-4(7k+7)), so:

-4(7k+7)

We multiply parentheses

-28k-28

Back to the equation:

-(-28k-28)



We get rid of parentheses

-7k+28k+28-7=0

We add all the numbers together, and all the variables

21k+21=0

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

21k=-21

k=-21/21

k=-1

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