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2 May, 23:45

Elimination of

x-y=11

2x+y=19

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Answers (1)
  1. 3 May, 00:04
    0
    Ggeasy

    we can eliminate the y terms by adding the equations

    x-y=11

    2x+y=19 +

    3x+0y=30

    3x=30

    divide by 3

    x=10

    subb ack

    x-y=11

    10-y=11

    minus 10 both sides

    -y=1

    times - 1

    y=-1

    (x, y)

    (10,-1)
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