z=z*2

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Solution for z=z*2 equation: 



z=z*2

We move all terms to the left:

z-(z*2)=0

We add all the numbers together, and all the variables

z-(+z*2)=0

We get rid of parentheses

z-z*2=0

Wy multiply elements

z-2z=0

We add all the numbers together, and all the variables

-z=0

z=0/-1

z=0

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