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15 March, 07:51

3x-2y=2

5x-5y=10

Elimination method

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Answers (1)
  1. 15 March, 10:21
    0
    Add - 5 times the second equation to 2 times the first to get:

    10x-10y-15x+10y=20-10

    Thus:

    -5x=10

    Divide by - 5 to get:

    x=-2.

    Substitute this into the first equation to get:

    -6-2y=2

    Add 6 to get:

    -2y=8

    Divide by - 2 to get y=-4.
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