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Mathematics, 30.07.2019 18:50 DiamondW1258

1) 4x-7y=3 x-7y=-15 2) 9x+8y=15 9x+8y=30

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1) 4x-7y=3 x-7y=-15 2) 9x+8y=15 9x+8y=30...
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