18=2z-1

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Solution for 18=2z-1 equation: 



18=2z-1

We move all terms to the left:

18-(2z-1)=0

We get rid of parentheses

-2z+1+18=0

We add all the numbers together, and all the variables

-2z+19=0

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

-2z=-19

z=-19/-2

z=9+1/2

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