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

Toán Lớp 6: x-3/8=1/4 3/2x+1/7=7/8.64/49 5-2/3x=1.1/10.10% 2/3+1/3(x)=(-2)mu 0

Tháng Hai 1, 2023 Toán học 2 Comments 0 views

Toán Lớp 6: x-3/8=1/4
3/2x+1/7=7/8.64/49
5-2/3x=1.1/10.10%
2/3+1/3(x)=(-2)mu 0

Comments ( 2 )

  1. hongocha12
    hongocha12
    1 Tháng Hai, 2023 at 11:37 sáng
    Reply
    x – 3/8 = 1/4
    x = 1/4 + 3/8
    x = 5/8
    _______________
    3/2 x + 1/7 = 7/8 . 64/49
    3/2 x + 1/7 = 8/7
    3/2 x = 8/7 – 1/7
    3/2x = 1
    x = 1 : 3/2
    x = 2/3
    ____________________
    5-2/3x = 1 . 1/10 . 10%
    5 – 2/3x = 1/10 . 1/10
    5-2/3x = 1/100
    2/3x = 5 – 1/100
    2/3x = 499/100
    x = 499/100 : 2/3
    x = 1497/200
    _______________________
    2/3 + 1/3 x = (-2)^0
    2/3 + 1/3x = 1
    1/3x = 1-2/3
    1/3x = 1/3
    x = 1/3 : 1/3
    x = 1

  2. ngochuong2k2
    ngochuong2k2
    1 Tháng Hai, 2023 at 11:36 sáng
    Reply
    Giải đáp:
    1,x=5/8
    2, x=2/3
    3, 1497/200
    4, x=1
    Lời giải và giải thích chi tiết:
    1,
    x – 3/8 = 1/4
    ⇔ x = 1/4 + 3/8
    ⇔ x = 2/8 + 3/8
    ⇔ x =5/8
    Vậy x=5/8
    2,
    3/2x + 1/7 = 7/8 × 64/49
    ⇔ 3/2x + 1/7 = 8/7
    ⇔ 3/2x = 8/7 – 1/7
    ⇔ 3/2x = 1
    ⇔x=1 ÷ 3/2
    ⇔x = 1 × 2/3
    ⇔x=2/3
    Vậy x=2/3
    3,
    5 – 2/3x= 1 × 1/10 × 10%
    ⇔ 5 – 2/3x = 1/10 × 1/10
    ⇔ 5 – 2/3x = 1/100
    ⇔ 2/3x = 5 – 1/100
    ⇔ 2/3x = 500/100 – 1/100
    ⇔ 2/3x = 499/100
    ⇔x=499/100 ÷ 2/3
    ⇔x=499/100 × 3/2
    ⇔x=1497/200
    Vậy x=1497/200
    4,
    2/3 + 1/3x = (-2)^0
    ⇔ 2/3 + 1/3x=1
    ⇔ 1/3x=1-2/3
    ⇔1/3x=3/3-2/3
    ⇔1/3x=1/3
    ⇔x=1/3÷1/3
    ⇔x=1/3 × 3
    ⇔x=1
    Vậy x=1
     

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

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