-z=4z-20

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Solution for -z=4z-20 equation: 



-z=4z-20

We move all terms to the left:

-z-(4z-20)=0

We add all the numbers together, and all the variables

-1z-(4z-20)=0

We get rid of parentheses

-1z-4z+20=0

We add all the numbers together, and all the variables

-5z+20=0

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

-5z=-20

z=-20/-5

z=+4

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