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-19=-3k+8
We move all terms to the left:
-19-(-3k+8)=0
We get rid of parentheses
3k-8-19=0
We add all the numbers together, and all the variables
3k-27=0
We move all terms containing k to the left, all other terms to the right
3k=27
k=27/3
k=9
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