-9=3+4k

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Solution for -9=3+4k equation: 



-9=3+4k

We move all terms to the left:

-9-(3+4k)=0

We add all the numbers together, and all the variables

-(4k+3)-9=0

We get rid of parentheses

-4k-3-9=0

We add all the numbers together, and all the variables

-4k-12=0

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

-4k=12

k=12/-4

k=-3

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