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X+y=7,2x-3y=11 substitution method

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X+y=7,2x-3y=11 substitution method

    • Posted by Tharun Kumar 1 year, 11 months ago

    CBSE > Class 10 > Mathematics
    • 2 answers

    Aanya Aggarwal 1 year, 11 months ago

    From equation 1, x=7-y........3 Substituting 3 in 2, 2(7-y)- 3y=11 14-2y-3y=11 -5y=11-14 -5y= -3 y=5/3 Substituting the value of y in equation 1, x+5/3=7 Taking LCM, 3x+ 5 ----------- =7 3 3x+5=7*3 3x+5=21 3x=21-5 X=16/3

    1Thank You

    Aanya Aggarwal 1 year, 11 months ago

    y=5/3, x=16/3

    1Thank You

    ANSWER
    http://mycbseguide.com/examin8/

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