If you triple me, subract 7, and add 4 you get 42. What number am i?

Discussion in 'Calculator Requests' started by math_celebrity, Jul 28, 2018.

Tags:
  1. math_celebrity

    math_celebrity Administrator Staff Member

    If you triple me, subract 7, and add 4 you get 42. What number am i?

    Start with an unknown number, "x".

    Triple me
    3x

    Subtract 7
    3x - 7

    Add 4
    3x - 7 + 4

    You get 42
    3x - 7 + 4 = 42

    Simplify:
    3x - 3 = 42

    Run this through our equation calculator:
    x = 15
     
    math_celebrity, Jul 28, 2018
    #1

Share This Page