A first number plus twice a second number is 11. Twice the first number plus the second totals 34. F

Discussion in 'Calculator Requests' started by math_celebrity, Apr 4, 2019.

  1. math_celebrity

    math_celebrity Administrator Staff Member

    A first number plus twice a second number is 11. Twice the first number plus the second totals 34. Find the numbers.

    Let the first number be x and the second number be y. We're given:
    1. x + 2y = 11
    2. 2x + y = 34
    Using our simultaneous equations calculator, we have 3 methods to solve this:
    1. Substitution Method
    2. Elimination Method
    3. Cramer's Rule
    All 3 methods give the same solution:
    • x = 19
    • y = -4
     

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