15z-3z-7z-3z=20

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Solution for 15z-3z-7z-3z=20 equation: 



15z-3z-7z-3z=20

We move all terms to the left:

15z-3z-7z-3z-(20)=0

We add all the numbers together, and all the variables

2z-20=0

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

2z=20

z=20/2

z=10

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