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7k=8k-38
We move all terms to the left:
7k-(8k-38)=0
We get rid of parentheses
7k-8k+38=0
We add all the numbers together, and all the variables
-1k+38=0
We move all terms containing k to the left, all other terms to the right
-k=-38
k=-38/-1
k=+38
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