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