10k-9=8+9k-7

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Solution for 10k-9=8+9k-7 equation: 



10k-9=8+9k-7

We move all terms to the left:

10k-9-(8+9k-7)=0

We add all the numbers together, and all the variables

10k-(9k+1)-9=0

We get rid of parentheses

10k-9k-1-9=0

We add all the numbers together, and all the variables

k-10=0

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

k=10

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