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12.6=-1.3k-3.7k
We move all terms to the left:
12.6-(-1.3k-3.7k)=0
We add all the numbers together, and all the variables
-(-5k)+12.6=0
We get rid of parentheses
5k+12.6=0
We move all terms containing k to the left, all other terms to the right
5k=-12.6
k=-12.6/5
k=-2+2.6/5
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