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14 November, 04:25

15. x - y = 4

2x+y=5

+1
Answers (1)
  1. 14 November, 04:43
    0
    x = 3, y = - 1

    Step-by-step explanation:

    1) x - y = 4

    2x + y = 5

    2) 3x = 9

    3) x = 3 (9/3)

    4) 3 - y = 4

    (x - y = 4)

    5) - y = 1 (4-3)

    6) y = - 1
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