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NEED help

  1. Jan 28, 2007 #1
    it's Abstract Algebra. I don't understand that's queiston--> Suppose that a divies b and b divides c. Prove that a divies c.
     
    Last edited: Jan 28, 2007
  2. jcsd
  3. Jan 28, 2007 #2
    Other need help...

    it's Abstract Algebra.. I don't understand that's queiston --> Suppose that a divies b and b divides c. Prove that a divies (bx + cy) for any integers x and y.
     
    Last edited: Jan 28, 2007
  4. Jan 29, 2007 #3
    What don't you understand about the questions? What do the phrases "a divides b" and "b divides c" mean?
     
  5. Jan 29, 2007 #4

    HallsofIvy

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    Especially since this is Abstract Algebra. If this were a question in arithmetic or number theory, we could assume you knew what "a divides b" means. But what is the general definition? How is "a divides b" defined?
     
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