21k-15=-6

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Solution for 21k-15=-6 equation: 



21k-15=-6

We move all terms to the left:

21k-15-(-6)=0

We add all the numbers together, and all the variables

21k-9=0

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

21k=9

k=9/21

k=3/7

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