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If 2x -3 =7 -5x, then x is ....

If `2x -3 =7 -5x`, then x is ______.

Text Solution

Verified by Experts

The correct Answer is:
`10/7`
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If A = 3x^(2) + 5x -3 and B = 5x^(2) -7 , then 2A -B is _____

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Knowledge Check

  • If (3^(5x)xx(81)^(2)xx6561)/(3^(2x))=3^(7) , then x =_______

    A
    3
    B
    `-3`
    C
    `(1)/(3)`
    D
    `(-1)/(3)`

  • If 2^(x).9^(2x+3) = 7^(x+5) , then x =

    A
    `(5"log"7 +6"log"3)/("log" 162-"log"7)`
    B
    `(5"log"7-6"log"3)/("log"162 + "log" 7)`
    C
    `(5"log" 7-6 "log" 3)/("log"162-"log"7)`
    D
    none of these

  • If 2x + 3y = (11)/(3) and 5x – 7y = (31)/(3), then the value of x and y are respectively is

    A
    `(107)/(87), (7)/(87)`
    B
    `(107)/(87), (-7)/(87)`
    C
    `(160)/(78) , (-7)/(87)`
    D
    `(170)/(87) , (-7)/(87)`

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    The LCM of the polynomials (x-3)(x+5)^(2),(x+5)(x-7)^(2)and(x-7)(x-3)^(2) is ___________.

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