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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 6: (-3)–2/9 13.2/3.4/9-4.4/9-4/9.2/3 (3/4+0,25):3/5+2/3+(-2020)

Tháng Hai 1, 2023 Toán học 2 Comments 0 views

Toán Lớp 6: (-3)–2/9
13.2/3.4/9-4.4/9-4/9.2/3
(3/4+0,25):3/5+2/3+(-2020)

Comments ( 2 )

  1. ngoclandiep
    ngoclandiep
    1 Tháng Hai, 2023 at 12:06 chiều
    Reply
    1.
    -3 – 2/9
    = (-27)/9 – 2/9
    = (-29)/7
    2.
    13 . 2/3 . 4/9 – 4 . 4/9 – 4/9 . 2/3
    = 26/3 . 4/9 – 4 . 4/9 – 4/9 . 2/3
    = (26/3 – 4 – 2/3) . 4/9
    = 4 . 4/9
    = 8/9
    3.
    (3/4 + 0,25) : 3/5 + 2/3 + (-2020)
    = (3/4 + 1/4) . 5/3 + 2/3 – 2020
    = 1 . 5/3 + 2/3 – 2020
    = 5/3 + 2/3 – 2020
    = 7/3 – 2020
    = 7/3 – 6060/3
    = 6053/3

  2. dongoctuan
    dongoctuan
    1 Tháng Hai, 2023 at 12:05 chiều
    Reply
     Giải đáp:
     
    Lời giải và giải thích chi tiết:
     (-3) – (-2/9)
    = (-27/9) + 2/9
    = -25/9
    13 . 2/3 . 4/9 – 4 . 4/9 – 4/9 . 2/3
    = 26/3 . 4/9 – 4 . 4/9 – 4/9 . 2/3
    = (26/3 – 4 – 2/3) . 4/9
    = 4 . 4/9
    = 16/9
    (3/4 + 0,25) : 3/5 + 2/3 + (-2020)
    = (3/4 + 1/4) : 3/5 + 2/3 + (-2020)
    = 1 : 3/5 + 2/3 + (-2020)
    = 5/3 + 2/3 + (-2020)
    = 7/3 + (-2020)
    = 7/3 + (-6060/3)
    = – 6053/3

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222-9+11+12:2*14+14 = ? ( )

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