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-k=k+8
We move all terms to the left:
-k-(k+8)=0
We add all the numbers together, and all the variables
-1k-(k+8)=0
We get rid of parentheses
-1k-k-8=0
We add all the numbers together, and all the variables
-2k-8=0
We move all terms containing k to the left, all other terms to the right
-2k=8
k=8/-2
k=-4
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