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6 December, 21:53

Is (5,1) the solution for

2x-y = 9

X+4y=9

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Answers (1)
  1. 6 December, 21:56
    0
    Use the substitution method

    x = 5, y = 1

    2x-y = 9

    2 (5) - 1 = 9

    Mutiply first then subtract

    10-1 = 9

    9 = 9

    X+4y=9

    5+4 (1) = 9

    5+4 = 9

    9 = 9

    Answer : Yes
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