A first number plus twice a second number is 3. Twice the first number plus the second totals 24.

Discussion in 'Calculator Requests' started by math_celebrity, Feb 10, 2020.

  1. math_celebrity

    math_celebrity Administrator Staff Member

    A first number plus twice a second number is 3. Twice the first number plus the second totals 24.

    Let the first number be x. Let the second number be y. We're given:
    1. x + 2y = 3 <-- Because twice means multiply by 2
    2. 2x + y = 24 <-- Because twice means multiply by 2
    We have a system of equations. We can solve it any one of three ways:

    No matter which way we choose, we get:
    • x = 15
    • y = -6
     

Share This Page