SOLUTION: I have a question on absolute vaule. the problems says: |22z-9|=1 and i need to find the set. how can i find it if i can't divide 10 into 22??

You can divide 22 into 10 (not 10 into 22) and get  which reduces to .
Realize that not all problems come out with whole numbers. In fact,
real life problems seldom do.  In school when you get math problems that
come out whole numbers, they're just planned that way to make it easier
for you.  But you have to get some problems that come out with fraction or
decimal answers 


        |22z - 9| = 1

That breaks into two equations:

22z - 9 = 1   and  22z - 9 = -1
    22z = 10           22z = 8
      z =              z = 
      z =              z = 
  
There are two solutions and the solution set is { ,  }
`
Edwin