-9-7k=-30

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Solution for -9-7k=-30 equation: 



-9-7k=-30

We move all terms to the left:

-9-7k-(-30)=0

We add all the numbers together, and all the variables

-7k+21=0

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

-7k=-21

k=-21/-7

k=+3

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