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21 December, 14:02

X + 2 y = 5

y=2x - 15

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Answers (1)
  1. 21 December, 17:42
    0
    one solution : (7; - 1)

    Step-by-step explanation:

    hello:

    X + 2 y = 5 ... (*)

    y=2x - 15 ... (**)

    use (**) put the value of y into (*) : x+2 (2x-15) = 5

    x+4x-30=5

    5x = 35

    x=35/5=7

    but : y = 2x-15

    so : y=2 (7) - 15=-1
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