5z-12=9

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Solution for 5z-12=9 equation: 



5z-12=9

We move all terms to the left:

5z-12-(9)=0

We add all the numbers together, and all the variables

5z-21=0

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

5z=21

z=21/5

z=4+1/5

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