7k-3=81

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Solution for 7k-3=81 equation: 



7k-3=81

We move all terms to the left:

7k-3-(81)=0

We add all the numbers together, and all the variables

7k-84=0

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

7k=84

k=84/7

k=12

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