3z=z-9

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Solution for 3z=z-9 equation: 



3z=z-9

We move all terms to the left:

3z-(z-9)=0

We get rid of parentheses

3z-z+9=0

We add all the numbers together, and all the variables

2z+9=0

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

2z=-9

z=-9/2

z=-4+1/2

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