23=9+7k

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Solution for 23=9+7k equation: 



23=9+7k

We move all terms to the left:

23-(9+7k)=0

We add all the numbers together, and all the variables

-(7k+9)+23=0

We get rid of parentheses

-7k-9+23=0

We add all the numbers together, and all the variables

-7k+14=0

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

-7k=-14

k=-14/-7

k=+2

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