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16 May, 10:20

3x+2y=12 and 6x + 3y=21

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  1. 16 May, 13:26
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    3x+2y=12 |•2

    6x+3y=21

    6x+4y=24

    6x+3y=21

    0x+y=3

    y=3; x=2
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