If x = 2y/3 and y = 18, what is the value of 2x - 3?

Discussion in 'Calculator Requests' started by math_celebrity, Aug 27, 2019.

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  1. math_celebrity

    math_celebrity Administrator Staff Member

    If x = 2y/3 and y = 18, what is the value of 2x - 3?

    A) 21
    B) 15
    C) 12
    D) 10

    Substitute the values into the equation:
    2(2y/3) - 3 <-- Given x = 2y/3

    Simplifying, we have:
    4y/3 - 3

    Now substitute y = 18 into this:
    4(18)/3 - 3
    4(6) - 3
    24 - 3
    21 or Answer A
     
    math_celebrity, Aug 27, 2019
    #1

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