P=6/5.8+22/8.19+24/19.31+140/31.101=198/101.200

P=6/5.8+22/8.19+24/19.31+140/31.101=198/101.200

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  1. Đáp án:

    6/5.8 + 22/8.19 + 24/19.31 + 140/31.101 + 198/101.200

    =2.(3/5.8+11/8.19+12/19.31+70/31.101+99/101.200)

    =2.(1/5-1/8+1/8-1/19+1/19-1/31+1/31-1/101+1/101-1/200)

    =2.(1/5-1/200)

    =2.(40/200-1/200)

    =2.39/200

    =39/100

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