31+7k=-7(-4k+4)-4

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Solution for 31+7k=-7(-4k+4)-4 equation: 



31+7k=-7(-4k+4)-4

We move all terms to the left:

31+7k-(-7(-4k+4)-4)=0



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

-7(-4k+4)-4

We multiply parentheses

28k-28-4

We add all the numbers together, and all the variables

28k-32

Back to the equation:

-(28k-32)



We get rid of parentheses

7k-28k+32+31=0

We add all the numbers together, and all the variables

-21k+63=0

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

-21k=-63

k=-63/-21

k=+3

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