9z-18=12-7z

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Solution for 9z-18=12-7z equation: 



9z-18=12-7z

We move all terms to the left:

9z-18-(12-7z)=0

We add all the numbers together, and all the variables

9z-(-7z+12)-18=0

We get rid of parentheses

9z+7z-12-18=0

We add all the numbers together, and all the variables

16z-30=0

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

16z=30

z=30/16

z=1+7/8

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