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22 July, 05:51

3r+p=-8 and 2r + p = 22 2r+p=22

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  1. 22 July, 06:43
    0
    We can eliminate p

    multiply 2nd equation by - 1 and add to first

    3r+p=-8

    -2r-p=-22 +

    1r+0p=-30

    r=-30

    sub back

    2r+p=22

    2 (-30) + p=22

    -60+p=22

    add 60 both sides

    p=82

    r=-30

    p=82
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