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20=k-936/2
We move all terms to the left:
20-(k-936/2)=0
We add all the numbers together, and all the variables
-(k-468)+20=0
We get rid of parentheses
-k+468+20=0
We add all the numbers together, and all the variables
-1k+488=0
We move all terms containing k to the left, all other terms to the right
-k=-488
k=-488/-1
k=+488
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