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

Toán Lớp 7: `3 1/2-4 2/3+|3/4-2 1/3|-(5/6-7/4)+5 1/2-3`

Tháng Chín 10, 2022 Toán học 2 Comments 0 views

Toán Lớp 7: 3 1/2-4 2/3+|3/4-2 1/3|-(5/6-7/4)+5 1/2-3

Comments ( 2 )

  1. khanhngantoan
    khanhngantoan
    10 Tháng Chín, 2022 at 10:18 chiều
    Reply
    3 1/2 – 4 2/3 + |3/4 – 2 1/3| – (5/6 – 7/4) + 5 1/2 – 3
    = 7/2 – 14/3 + |3/4 – 7/3| – (5/6 – 7/4) + 1/2 – 3
    = -7/6 + |3/4 – 7/3| – (5/6 – 7/4) + 1/2 – 3
    = -7/6 + |19/12| – (5/6 – 7/4) + 1/2 – 3
    = -7/6 + 19/12 – (5/6 – 7/4) + 1/2 – 3
    = -7/6 + 19/12 + 11/12 + 1/2 – 3
    = -7/6 + 5/2 + 1/2 – 3
    = -7/6 + 3 – 3
    = -7/6 + 0
    = -7/6

  2. phuongthuydung
    phuongthuydung
    10 Tháng Chín, 2022 at 10:18 chiều
    Reply
    Giải đáp:
    3.
    Lời giải và giải thích chi tiết:
    $3\dfrac12-4\dfrac23+\left|\dfrac34-2\dfrac13\right|-\left(\dfrac56-\dfrac74\right)+5\dfrac12-3\\=\dfrac72-\dfrac{14}3+\left|\dfrac34-\dfrac73\right|-\dfrac{-11}{12}+2\dfrac12\\=\dfrac{-7}6+\left|\dfrac{-19}{12}\right|+\dfrac{11}{12}+\dfrac52\\=\dfrac{-7}6+\dfrac52+\dfrac{19}{12}+\dfrac{11}{12}\\=\dfrac43+\dfrac53\\=3$

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

Nguyệt Minh

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