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  1. Casiopea's Avatar

    • Join Date: Sep 2003
    • Posts: 12,970
    Quote Originally Posted by Hong Kong Chinese
    Teacher Tdol,

    You are correct! She/he is a liar!
    One cannot solve an equation with two unknowns!
    e.g. a + b = 10

    if a is equal one, b will be equal to nine,
    However, if a is equal to two, b will be equal to eight and so on.
    In conclusion, a and b are variables.
    artax is correct. :)

    Quote Originally Posted by artax
    Summing a rational number (y) to an irrational one you always obtain an irrational number. So the only way y is rational is that a (of a/b, 'a' over 'b') is equal to b or an his multiple. for example ^5 or 2*^5

  2. Hong Kong Chinese


    I think that I have misunderstood the first reply of Teacher Tdol, which may probably be caused by our culture difference.

    Though I almost forgot all the algebra formulas, as a rule, I still insist that:

    One unknown in one equation
    Two unknowns in two equations
    Three unknowns in three equations

    Those unknowns can be solved!

    I normally don’t call myself a liar, but sometimes an imbecile.

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