7z-4=8z

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Solution for 7z-4=8z equation: 



7z-4=8z

We move all terms to the left:

7z-4-(8z)=0

We add all the numbers together, and all the variables

-1z-4=0

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

-z=4

z=4/-1

z=-4

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