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2.5=k+6.6
We move all terms to the left:
2.5-(k+6.6)=0
We get rid of parentheses
-k-6.6+2.5=0
We add all the numbers together, and all the variables
-1k-4.1=0
We move all terms containing k to the left, all other terms to the right
-k=4.1
k=4.1/-1
k=-4+0.1/1
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