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-7.15=-3.8k+-2.7k
We move all terms to the left:
-7.15-(-3.8k+-2.7k)=0
We add all the numbers together, and all the variables
-(-6.5k)-7.15=0
We get rid of parentheses
6.5k-7.15=0
We move all terms containing k to the left, all other terms to the right
6.5k=7.15
k=7.15/6.5
k=1+0.65/6.5
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