4.2z-4.5z=9

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Solution for 4.2z-4.5z=9 equation: 



4.2z-4.5z=9

We move all terms to the left:

4.2z-4.5z-(9)=0

We add all the numbers together, and all the variables

-0.3z-9=0

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

-0.3z=9

z=9/-0.3

z=-30

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