14k+7k=-21

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Solution for 14k+7k=-21 equation: 



14k+7k=-21

We move all terms to the left:

14k+7k-(-21)=0

We add all the numbers together, and all the variables

21k+21=0

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

21k=-21

k=-21/21

k=-1

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