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3-13k=-8.6k-13.3k-13.91
We move all terms to the left:
3-13k-(-8.6k-13.3k-13.91)=0
We add all the numbers together, and all the variables
-13k-(-21.9k-13.91)+3=0
We get rid of parentheses
-13k+21.9k+13.91+3=0
We add all the numbers together, and all the variables
8.9k+16.91=0
We move all terms containing k to the left, all other terms to the right
8.9k=-16.91
k=-16.91/8.9
k=-1+1/1.1111111111111
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