• Sockenklaus
    link
    fedilink
    31 year ago

    You clearly mean:

    14: 1 + 8 = 9 (not db 7)

    Someone else in this thread correctly stated:

    “Chop of last digit, double it and subtract from what is left”

    14: 1 - 8 = -7. (dB 7!)

    Math is awesome, I didn’t know this trick!