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3x + 2y = 29 ; …

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3x + 2y = 29 ; 5x - y = 18

    • Posted by Paras Jadhav 5 years, 7 months ago

    ICSE & ISC > Class 10 > Mathematics
    • 1 answers

    Yogita Ingle 5 years, 7 months ago

    3x + 2y = 29  .......... (i)
    5x - y = 18  .......... (ii) 
    multiply equation (ii) by 2 and add in (i) ,  we get
    3x + 2y = 29
    +10x - 2y = 36
    ____________
    13x=65
    x = 65/13=  5
    now put in (ii), we get
    5(5) - y = 18
    25 - y = 18
    25 - 18 = y
    7 = y
    and x = 5


     

    1Thank You

    ANSWER
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