9th grade

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what is the value of x in the system? 5x-3y=23 3x+5y=7

  • 9th grade -

    5x-3y=23...............equation (1)
    3x+5y=7.................equation (2)

    Eq. (1) x 5: 25x-15y=115......Equation (3)
    Eq. (2) x 3: 9x + 15y=21........Equation (4)
    Eq (3)+Eq. (4): 34x = 136 (eliminating y)
    Therefore, x = 4

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