Mary is x years old. How old will she be in 9 years? How old was she 8 years ago

Discussion in 'Calculator Requests' started by math_celebrity, May 28, 2020.

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  1. math_celebrity

    math_celebrity Administrator Staff Member

    Mary is x years old. How old will she be in 9 years? How old was she 8 years ago

    In 9 years, we add, since her age goes up, so she'll be:
    x + 9

    8 years ago, we subtract, since her age goes down, so she'll be:
    x - 8
     
    math_celebrity, May 28, 2020
    #1

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