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March 27, 2017

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2x-5y=14
3x+2y=40
what is the solve of xy ?

  • 8th grade math - ,

    In English, do you mean how do you solve for x and y?

    multipy the top equation by 2, and the bottom equation by 5

    4x-10y=28
    15x+10y=200

    then add the equations...
    19x+0y=228
    divide each side by 19
    x=228/19=12
    Now go back to either of the original equations, but 12 in for x, and solve for y.

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