-3k-9=k-1+8

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Solution for -3k-9=k-1+8 equation: 



-3k-9=k-1+8

We move all terms to the left:

-3k-9-(k-1+8)=0

We add all the numbers together, and all the variables

-3k-(k+7)-9=0

We get rid of parentheses

-3k-k-7-9=0

We add all the numbers together, and all the variables

-4k-16=0

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

-4k=16

k=16/-4

k=-4

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