-2k-4=7k+21

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Solution for -2k-4=7k+21 equation: 



-2k-4=7k+21

We move all terms to the left:

-2k-4-(7k+21)=0

We get rid of parentheses

-2k-7k-21-4=0

We add all the numbers together, and all the variables

-9k-25=0

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

-9k=25

k=25/-9

k=-2+7/9

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