2z-7-5z-21=0

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Solution for 2z-7-5z-21=0 equation: 



2z-7-5z-21=0

We add all the numbers together, and all the variables

-3z-28=0

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

-3z=28

z=28/-3

z=-9+1/3

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