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20=100k(100-100)
We move all terms to the left:
20-(100k(100-100))=0
We add all the numbers together, and all the variables
-(100k0)+20=0
We add all the numbers together, and all the variables
-100k+20=0
We move all terms containing k to the left, all other terms to the right
-100k=-20
k=-20/-100
k=1/5
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