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-4=k/4-7
We move all terms to the left:
-4-(k/4-7)=0
We get rid of parentheses
-k/4+7-4=0
We multiply all the terms by the denominator
-k+7*4-4*4=0
We add all the numbers together, and all the variables
-1k+12=0
We move all terms containing k to the left, all other terms to the right
-k=-12
k=-12/-1
k=+12
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