21k-15=12

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Solution for 21k-15=12 equation: 



21k-15=12

We move all terms to the left:

21k-15-(12)=0

We add all the numbers together, and all the variables

21k-27=0

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

21k=27

k=27/21

k=1+2/7

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