8k+k=-9

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Solution for 8k+k=-9 equation: 



8k+k=-9

We move all terms to the left:

8k+k-(-9)=0

We add all the numbers together, and all the variables

9k+9=0

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

9k=-9

k=-9/9

k=-1

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