20+8z-7z=30

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Solution for 20+8z-7z=30 equation: 



20+8z-7z=30

We move all terms to the left:

20+8z-7z-(30)=0

We add all the numbers together, and all the variables

z-10=0

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

z=10

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