17-12z+2z-7z+2z=20

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Solution for 17-12z+2z-7z+2z=20 equation: 



17-12z+2z-7z+2z=20

We move all terms to the left:

17-12z+2z-7z+2z-(20)=0

We add all the numbers together, and all the variables

-15z-3=0

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

-15z=3

z=3/-15

z=-1/5

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