bài 3: tính a,1210:60-640:40 b,270:3:5-4 c,100-930:31d,[328-8]:32 e,982-420:20

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bài 3: tính a,1210:60-640:40 b,270:3:5-4 c,100-930:31d,[328-8]:32 e,982-420:20

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Brielle 1 năm 2021-07-24T01:25:10+00:00 1 Answers 26 views 1

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    2021-07-24T01:26:59+00:00

    a,1210:60-640:40

    = 21/6 – 16

    = -25/2

    b,270:3:5-4

    = 90 : 5 – 4

    = 18 – 4

    = 14

    c,100-930:31

    = 100 – 30

    = 70

    d,[328-8]:32

    = 320 : 32

    = 10

    e,982-420:20

    = 982 – 21

    = 961

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