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23 January, 21:38

Solve this simultaneous equation

5x+2y=11

4x-3y=18

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Answers (1)
  1. 23 January, 21:45
    0
    5x + 2y = 11 ⇒ 15x + 6y = 33

    4x - 3y = 18 ⇒ 8x - 6y = 36

    23x = 69

    23 23

    x = 3

    5x + 2y = 11

    5 (3) + 2y = 11

    15 + 2y = 11

    - 15 - 15

    2y = - 4

    2 2

    y = - 2

    (x, y) = (3, - 2)
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