9k-9=72

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Solution for 9k-9=72 equation: 



9k-9=72

We move all terms to the left:

9k-9-(72)=0

We add all the numbers together, and all the variables

9k-81=0

We move all terms containing k to the left, all other terms to the right

9k=81

k=81/9

k=9

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