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If x+y=3 and 3x+2y=4 the value …

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If x+y=3 and 3x+2y=4 the value of negative of x is

    • Posted by Arham Hussain 5 years ago

    CBSE > Class 10 > Mathematics
    • 5 answers

    Sushant Sharma 5 years ago

    We have x+y=3 ----------(i) and. 3x+2y=4 --_------(ii) From eq-(i). we'll get y=3-x -----(iii) Now put the value in eq-(ii) We ll get ,,,,, ::. :: 3x+2(3-x)=4 3x+6-2x=4 3x-2x=4-6 x=-2 Hurray ?????We solve it

    1Thank You

    King Adithya H M... 5 years ago

    x = -2

    0Thank You

    Paul Mongku 5 years ago

    By method of elimination Let, x+y=3......(1) 3x+2y=4.....(2) Multiply (1) by 3 we get, 3x+3y=9......(3) Now, subtract (2)from(3) 3x+3y= 9 - 3x+2y= 4 - - ______________ Y=5.....(4) Again substitute (4) in (1) we get, x+5=3 x =3-5 x = -2 ....ans

    2Thank You

    Yogita Ingle 5 years ago

     x+y=3 -------- (i)

     3x+2y=4 ......... (ii)

    Multiply (i) by 2 and subtract from (ii)

    3x + 2y = 4

    2x + 2y = 6

    ____________

    x = -2

    1Thank You

    Arham Hussain 5 years ago

    -2

    1Thank You

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