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18.33-8.5k=-12.9k+0.8k-3.99
We move all terms to the left:
18.33-8.5k-(-12.9k+0.8k-3.99)=0
We add all the numbers together, and all the variables
-8.5k-(-12.1k-3.99)+18.33=0
We get rid of parentheses
-8.5k+12.1k+3.99+18.33=0
We add all the numbers together, and all the variables
3.6k+22.32=0
We move all terms containing k to the left, all other terms to the right
3.6k=-22.32
k=-22.32/3.6
k=-6+0.72/3.6
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