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maths

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solve the following pair of simultaneous equations.

2x-3y=13

3x+y=3

  • maths - ,

    By elimination:
    2x-3y=13 ...(1)
    3x+y=3 ...(2)
    Multiply (2) by 3 and add to (1)
    2x-3y=13 ...(1)
    9x+3y=9 ...(3)
    Add(1) and (3)
    11x = 22 ...(4)
    Solve (4) to get
    x=11
    Substitute x=11 in (1) to solve for y.

  • typo/error - ,

    x=2, Substitute x=2 in (1) or (2). 2 is easier.

  • maths - ,

    Thank you Jen.
    yes, x=2.

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