7z+9z=48

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Solution for 7z+9z=48 equation: 



7z+9z=48

We move all terms to the left:

7z+9z-(48)=0

We add all the numbers together, and all the variables

16z-48=0

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

16z=48

z=48/16

z=3

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