-4k-8k=21

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Solution for -4k-8k=21 equation: 



-4k-8k=21

We move all terms to the left:

-4k-8k-(21)=0

We add all the numbers together, and all the variables

-12k-21=0

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

-12k=21

k=21/-12

k=-1+3/4

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