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200=k0.25
We move all terms to the left:
200-(k0.25)=0
We add all the numbers together, and all the variables
-(+k0.25)+200=0
We get rid of parentheses
-k0.25+200=0
We move all terms containing k to the left, all other terms to the right
-k0.25=-200
k=-200/1
k=-200
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