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3.05=0.4k+1.75
We move all terms to the left:
3.05-(0.4k+1.75)=0
We get rid of parentheses
-0.4k-1.75+3.05=0
We add all the numbers together, and all the variables
-0.4k+1.3=0
We move all terms containing k to the left, all other terms to the right
-0.4k=-1.3
k=-1.3/-0.4
k=3+0.1/0.4
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