-9k+21=66

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Solution for -9k+21=66 equation: 



-9k+21=66

We move all terms to the left:

-9k+21-(66)=0

We add all the numbers together, and all the variables

-9k-45=0

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

-9k=45

k=45/-9

k=-5

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