9z-18=3z+72

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Solution for 9z-18=3z+72 equation: 



9z-18=3z+72

We move all terms to the left:

9z-18-(3z+72)=0

We get rid of parentheses

9z-3z-72-18=0

We add all the numbers together, and all the variables

6z-90=0

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

6z=90

z=90/6

z=15

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