-5z-4z=45

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Solution for -5z-4z=45 equation: 



-5z-4z=45

We move all terms to the left:

-5z-4z-(45)=0

We add all the numbers together, and all the variables

-9z-45=0

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

-9z=45

z=45/-9

z=-5

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