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18 November, 16:59

Use the elimination method to solve the system of equations. 3x+2y=16 2x-2y=4

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Answers (2)
  1. 18 November, 19:04
    0
    x = 4; y = 2

    Step-by-step explanation:

    (1) 3x + 2y = 16

    (2) 2x - 2y = 4 Add (1) and (2)

    5x = 20 Divide each side by 5

    (3) x = 4 Substitute (3) into (2)

    2*4 - 2y = 4

    8 - 2y = 4 Subtract 16 from each side

    -2y = - 4 Divide each side by - 2

    y = 2

    Check:

    (1) 3*4 + 2*2 = 16

    12 + 4 = 16

    16 = 16

    (2) 2*4 - 2*2 = 4

    8 - 4 = 4

    4 = 4
  2. 18 November, 20:48
    0
    Answer: (4,2)
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