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47.9k=-2.16
We move all terms to the left:
47.9k-(-2.16)=0
We add all the numbers together, and all the variables
47.9k+2.16=0
We move all terms containing k to the left, all other terms to the right
47.9k=-2.16
k=-2.16/47.9
k=-2.16/47.9
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