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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