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Mathematics, 26.04.2020 07:00 ANCHUXIA

7.8 + 2(0.75m + 0.4) = -6.4m + 4(0.5m - 0.8)

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7.8 + 2(0.75m + 0.4) = -6.4m + 4(0.5m - 0.8)...

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