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k6.4+83.4=15.1
We move all terms to the left:
k6.4+83.4-(15.1)=0
We add all the numbers together, and all the variables
k6.4+68.3=0
We move all terms containing k to the left, all other terms to the right
k6.4=-68.3
k=-68.3/1
k=-68.3
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