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k/5.2+81.9=4.2
We move all terms to the left:
k/5.2+81.9-(4.2)=0
We add all the numbers together, and all the variables
k/5.2+77.7=0
We multiply all the terms by the denominator
k+(77.7)*5.2=0
We add all the numbers together, and all the variables
k+404.04=0
We move all terms containing k to the left, all other terms to the right
k=-404.04
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