18-3k+9(k=4)

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Solution for 18-3k+9(k=4) equation: 



18-3k+9(k=4)

We move all terms to the left:

18-3k+9(k-(4))=0

We multiply parentheses

-3k+9k-36+18=0

We add all the numbers together, and all the variables

6k-18=0

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

6k=18

k=18/6

k=3

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