math

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Use the solution of the system below to find x-y:
4x-2y=11
3x-4y=-6

a 11.3
b 0.1
c -0.1
d -11.3

please explain how to do this.
Thanks!!!

  • math -

    multiply the 1st equation by -2 and then add them to get rid of the y's [and hence find the x]

    once you have the value of x sub it into either of the two equations to find y.

    then just do x-y

    Hope that helps

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