-7z+13z-18z-4z-18z=20

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Solution for -7z+13z-18z-4z-18z=20 equation: 



-7z+13z-18z-4z-18z=20

We move all terms to the left:

-7z+13z-18z-4z-18z-(20)=0

We add all the numbers together, and all the variables

-34z-20=0

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

-34z=20

z=20/-34

z=-10/17

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