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18 February, 11:15

3y=-2x-19 - 5x-3y=-2

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Answers (2)
  1. 18 February, 11:17
    0
    3y = - 2x - 19 ⇒ 2x + 3y = - 19

    -5x - 3y = - 2 ⇒ - 5x - 3y = - 2

    -3x = - 17

    -3 - 3

    x = 5²/₃

    -5x - 3y = - 2

    -5 (5²/₃) - 3y = - 2

    -28¹/₃ - 3y = - 2

    + 28¹/₃ + 28¹/₃

    -3y = 26¹/₃

    -3 - 3

    y = - 8⁷/₉

    (x, y) = (5²/₃, - 8⁷/₉)
  2. 18 February, 11:43
    0
    3y=-2x-19 - 5x-3y=-2-5x - (-2x - 19) = - 2

    -5x + 2x + 19 = - 2

    -3x = - 21

    x = 7

    3y = - 2 (7) - 19

    3y = - 14 - 19

    3y = 33

    y = 11
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