15=-9+8k

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Solution for 15=-9+8k equation: 



15=-9+8k

We move all terms to the left:

15-(-9+8k)=0

We add all the numbers together, and all the variables

-(8k-9)+15=0

We get rid of parentheses

-8k+9+15=0

We add all the numbers together, and all the variables

-8k+24=0

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

-8k=-24

k=-24/-8

k=+3

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