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18 November, 23:59

2x+y=5

x+3y=5

a. (5,0)

b. (2,1)

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Answers (1)
  1. 19 November, 00:24
    0
    2x + 1y = 5 ⇒ 6x + 3y = 15

    1x + 3y = 5 ⇒ 1x + 3y = 5

    5x = 10

    5 5

    x = 2

    2x + y = 5

    2 (2) + y = 5

    4 + y = 5

    - 4 - 4

    y = 1

    (x, y) = (2, 1)

    The answer is B.
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