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-15+20k=4k+18k+19
We move all terms to the left:
-15+20k-(4k+18k+19)=0
We add all the numbers together, and all the variables
20k-(22k+19)-15=0
We get rid of parentheses
20k-22k-19-15=0
We add all the numbers together, and all the variables
-2k-34=0
We move all terms containing k to the left, all other terms to the right
-2k=34
k=34/-2
k=-17
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