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6 March, 04:31

3x + 2y = 19

- 4x + 3y = - 14

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Answers (1)
  1. 6 March, 05:09
    0
    x = 5 and y = 2, or (5,2) (Whichever one you do in class)

    Step-by-step explanation:

    You should solve this problem using substitution!

    First you want to solve for x on this equation, 3x + 2y = 19.

    start by subtracting 2y on each side, 3x + 2y (-2y) = 19 (-2y). 3x = - 2y + 19

    Then divide by 3, 3x/3 = (-2y + 19) / 3, this would give you x = (-2y + 19) / 3

    Next you substitute (-2y + 19) / 3 in for x in 4x + 3y = - 14: 4 (-2y/3 + 19/3) + 3y = - 14

    Then Solve: (See Math Papa Algebra Calculator if you want to know exactly how to solve.) This would give you y = 2

    Then substitute the 2: giving you x = 5
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