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18+10k/7=9
We move all terms to the left:
18+10k/7-(9)=0
We add all the numbers together, and all the variables
10k/7+9=0
We multiply all the terms by the denominator
10k+9*7=0
We add all the numbers together, and all the variables
10k+63=0
We move all terms containing k to the left, all other terms to the right
10k=-63
k=-63/10
k=-6+3/10
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