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.