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9k-2k=5k+1
We move all terms to the left:
9k-2k-(5k+1)=0
We add all the numbers together, and all the variables
7k-(5k+1)=0
We get rid of parentheses
7k-5k-1=0
We add all the numbers together, and all the variables
2k-1=0
We move all terms containing k to the left, all other terms to the right
2k=1
k=1/2
k=1/2
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