9-z=8z-9

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Solution for 9-z=8z-9 equation: 



9-z=8z-9

We move all terms to the left:

9-z-(8z-9)=0

We add all the numbers together, and all the variables

-1z-(8z-9)+9=0

We get rid of parentheses

-1z-8z+9+9=0

We add all the numbers together, and all the variables

-9z+18=0

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

-9z=-18

z=-18/-9

z=+2

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