-9+8k=31

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Solution for -9+8k=31 equation: 



-9+8k=31

We move all terms to the left:

-9+8k-(31)=0

We add all the numbers together, and all the variables

8k-40=0

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

8k=40

k=40/8

k=5

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