Tilted Forum Project Discussion Community - View Single Post

Slavakion · 10-15-2004, 06:56 PM

Yeah, so this was written on the chalkboard in math class. I'm using an r to represent the "repeating bar" in an irrational term.

Code:

        x = .9r
      10x = 9.9r
  10x - x = 9.9r - .9r
       9x = 9
        x = 1

Any thoughts? It makes sense, although I don't know if it's mathematically polite to do what he/she did in line three -- subtracting an x from one side and a constant from the other ven though they are equal.

10-15-2004, 06:56 PM	#1 (permalink)
Slavakion Mjollnir Incarnate Location: Lost in thought	Why .9r = 1 Yeah, so this was written on the chalkboard in math class. I'm using an r to represent the "repeating bar" in an irrational term. Code: x = .9r 10x = 9.9r 10x - x = 9.9r - .9r 9x = 9 x = 1 Any thoughts? It makes sense, although I don't know if it's mathematically polite to do what he/she did in line three -- subtracting an x from one side and a constant from the other ven though they are equal.