10k-4k-9=9+3k

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Solution for 10k-4k-9=9+3k equation: 



10k-4k-9=9+3k

We move all terms to the left:

10k-4k-9-(9+3k)=0

We add all the numbers together, and all the variables

10k-4k-(3k+9)-9=0

We add all the numbers together, and all the variables

6k-(3k+9)-9=0

We get rid of parentheses

6k-3k-9-9=0

We add all the numbers together, and all the variables

3k-18=0

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

3k=18

k=18/3

k=6

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