20z-15z-2z=18

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Solution for 20z-15z-2z=18 equation: 



20z-15z-2z=18

We move all terms to the left:

20z-15z-2z-(18)=0

We add all the numbers together, and all the variables

3z-18=0

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

3z=18

z=18/3

z=6

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