12=12+z-8/2

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Solution for 12=12+z-8/2 equation: 



12=12+z-8/2

We move all terms to the left:

12-(12+z-8/2)=0

We add all the numbers together, and all the variables

-(z+8)+12=0

We get rid of parentheses

-z-8+12=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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