9k+13=40

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Solution for 9k+13=40 equation: 



9k+13=40

We move all terms to the left:

9k+13-(40)=0

We add all the numbers together, and all the variables

9k-27=0

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

9k=27

k=27/9

k=3

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