8-9z=21z-17

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Solution for 8-9z=21z-17 equation: 



8-9z=21z-17

We move all terms to the left:

8-9z-(21z-17)=0

We get rid of parentheses

-9z-21z+17+8=0

We add all the numbers together, and all the variables

-30z+25=0

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

-30z=-25

z=-25/-30

z=5/6

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