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-7k-4=-8-8k
We move all terms to the left:
-7k-4-(-8-8k)=0
We add all the numbers together, and all the variables
-7k-(-8k-8)-4=0
We get rid of parentheses
-7k+8k+8-4=0
We add all the numbers together, and all the variables
k+4=0
We move all terms containing k to the left, all other terms to the right
k=-4
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