• Clinicallydepressedpoochie@lemmy.world
      link
      fedilink
      English
      arrow-up
      10
      arrow-down
      3
      ·
      edit-2
      4 months ago

      I hate this because you have to subtract .99999… from 10. Which is just the same as saying 10 - .99999… = 9

      Which is the whole controversy but you made it complicated.

      It would be better just to have them do the long subtraction

      If they don’t get it and keep trying to show you how you are wrong they will at least be out of your hair until forever.

      • Wandering_Uncertainty@lemmy.world
        link
        fedilink
        English
        arrow-up
        5
        ·
        4 months ago

        ???

        Not sure what you’re aiming for. It proves that the setup works, I suppose.

        x = 0.555…

        10x = 5.555…

        10x = 5 + 0.555…

        10x = 5+x

        9x = 5

        x = 5/9

        5/9 = 0.555…

        So it shows that this approach will indeed provide a result for x that matches what x is supposed to be.

        Hopefully it helped?