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2k-8=4k+1
We move all terms to the left:
2k-8-(4k+1)=0
We get rid of parentheses
2k-4k-1-8=0
We add all the numbers together, and all the variables
-2k-9=0
We move all terms containing k to the left, all other terms to the right
-2k=9
k=9/-2
k=-4+1/2
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