If x is divided by 9, the remainder is 5. What is the remainder if 3x is divided by 9?

Discussion in 'Calculator Requests' started by math_celebrity, Jun 14, 2021.

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  1. math_celebrity

    math_celebrity Administrator Staff Member

    If x is divided by 9, the remainder is 5. What is the remainder if 3x is divided by 9?

    pick an integer x where when dividing by 9, we get a remainder of 5.
    14/9 gives us a remainder of 5.

    Now multiply 14 by 3:
    14 * 3 = 42
    42/9 gives a remainder of 6
     

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