orungano (tiff)'s status on Wednesday, 20-Feb-13 21:50:30 UTC

  1. orungano orungano

    Clever maths people: with simultaneous equations, if you multiply both A and B to get a C and a D, can you take D away from C or vice versa, or do you have to take away from one of the original two equations?

    Wednesday, 20-Feb-13 21:50:30 UTC from web in context