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13 December, 02:51

1.2x-0.8y=-6

4.8x+2.4y=60

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  1. 13 December, 03:17
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    12x-8y=-60 48x+24y=600 3x-2y=-15 2x+y=25 So y=25-2x So 3x-2 (25-2x) = - 15 3x-50+4x=-15 7x=35 X=5 So y=25-10=15
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