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k/8.7+84.1=61.4
We move all terms to the left:
k/8.7+84.1-(61.4)=0
We add all the numbers together, and all the variables
k/8.7+22.7=0
We multiply all the terms by the denominator
k+(22.7)*8.7=0
We add all the numbers together, and all the variables
k+197.49=0
We move all terms containing k to the left, all other terms to the right
k=-197.49
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