3z-9z=30

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Solution for 3z-9z=30 equation: 



3z-9z=30

We move all terms to the left:

3z-9z-(30)=0

We add all the numbers together, and all the variables

-6z-30=0

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

-6z=30

z=30/-6

z=-5

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