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Solve the equation by subtuition method …

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Solve the equation by subtuition method 3x-5y-4=0 9x=2y+7

    • Posted by Prem Kumar 6 years, 8 months ago

    CBSE > Class 10 > Mathematics
    • 2 answers

    Prem Kumar 6 years, 8 months ago

    Thnkew

    0Thank You

    Yogita Ingle 6 years, 8 months ago

    3x - 5y - 4 = 0  .....(1)
    9x = 2y + 7  .......(2)
    So multiply equation 1 by 3 to get
    9x - 15y - 12 = 0 ......... (3)

    Put (2) in (3)
    2y + 7 - 15y - 12 = 0
    - 13y - 5 = 0
    - 13y = 5
    y = 5/-13
    Put value of y in (2)
    9x = 2(5/-13) + 7
    9x = - 10/13 + 7
    9x = (-10+ 91)/13
    9x = 81/13
    x = 9/13

    1Thank You

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