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7 January, 07:00

4y-5x = 9

x - 4y = 11

+4
Answers (1)
  1. 7 January, 10:46
    0
    x=-5

    y=-4

    Step-by-step explanation:

    lest re write the equations as

    4y-5x=9

    -4y+x=11

    adding both equations

    4y-5x-4y+x=9+11

    -4x=20

    x=20/-4

    x=-5

    putting x in second equation

    -5-4y=11

    -4y=11+5

    -4y=16

    y=16/-4

    y=-4
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