-9+9k=-7-1+8k

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Solution for -9+9k=-7-1+8k equation: 



-9+9k=-7-1+8k

We move all terms to the left:

-9+9k-(-7-1+8k)=0

We add all the numbers together, and all the variables

9k-(8k-8)-9=0

We get rid of parentheses

9k-8k+8-9=0

We add all the numbers together, and all the variables

k-1=0

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

k=1

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