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-18+42k=-18+1k
We move all terms to the left:
-18+42k-(-18+1k)=0
We add all the numbers together, and all the variables
42k-(k-18)-18=0
We get rid of parentheses
42k-k+18-18=0
We add all the numbers together, and all the variables
41k=0
k=0/41
k=0
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