-8k-31=-3k-(7-7k)

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Solution for -8k-31=-3k-(7-7k) equation: 



-8k-31=-3k-(7-7k)

We move all terms to the left:

-8k-31-(-3k-(7-7k))=0

We add all the numbers together, and all the variables

-8k-(-3k-(-7k+7))-31=0



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

-3k-(-7k+7)

We get rid of parentheses

-3k+7k-7

We add all the numbers together, and all the variables

4k-7

Back to the equation:

-(4k-7)



We get rid of parentheses

-8k-4k+7-31=0

We add all the numbers together, and all the variables

-12k-24=0

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

-12k=24

k=24/-12

k=-2

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