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19 March, 18:12

4x+4y=-20 and - 3x-12y=-60

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  1. 19 March, 18:17
    0
    (0,-5)

    Step-by-step explanation:

    3 (4x+4y=20)

    -3x-12y=-60

    12x+12y=60

    -3x-12y=-60

    9x=0

    x=0

    4 (0) + 4y=-20

    4y=-20

    y=-5
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