7=8z-z

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Solution for 7=8z-z equation: 



7=8z-z

We move all terms to the left:

7-(8z-z)=0

We add all the numbers together, and all the variables

-(+7z)+7=0

We get rid of parentheses

-7z+7=0

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

-7z=-7

z=-7/-7

z=1

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