31-8k=-2(8k+4)-1

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Solution for 31-8k=-2(8k+4)-1 equation: 



31-8k=-2(8k+4)-1

We move all terms to the left:

31-8k-(-2(8k+4)-1)=0



We calculate terms in parentheses: -(-2(8k+4)-1), so:

-2(8k+4)-1

We multiply parentheses

-16k-8-1

We add all the numbers together, and all the variables

-16k-9

Back to the equation:

-(-16k-9)



We get rid of parentheses

-8k+16k+9+31=0

We add all the numbers together, and all the variables

8k+40=0

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

8k=-40

k=-40/8

k=-5

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