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12.9=k+.6
We move all terms to the left:
12.9-(k+.6)=0
We add all the numbers together, and all the variables
-(k+0.6)+12.9=0
We get rid of parentheses
-k-0.6+12.9=0
We add all the numbers together, and all the variables
-1k+12.3=0
We move all terms containing k to the left, all other terms to the right
-k=-12.3
k=-12.3/-1
k=12+0.3/1
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