-20=8z-5z

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Solution for -20=8z-5z equation: 



-20=8z-5z

We move all terms to the left:

-20-(8z-5z)=0

We add all the numbers together, and all the variables

-(+3z)-20=0

We get rid of parentheses

-3z-20=0

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

-3z=20

z=20/-3

z=-6+2/3

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