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

Toán Lớp 6: Tìm x: 1)(2/3.x-32):2/3=3 và 1/3 2)(3/7-1/4+5/14):x=15% 3)x/2 – 2/5=-1/10 Helpppppppp!Gấp!!

Home/ Toán Lớp 6: Tìm x: 1)(2/3.x-32):2/3=3 và 1/3 2)(3/7-1/4+5/14):x=15% 3)x/2 – 2/5=-1/10 Helpppppppp!Gấp!!

Toán Lớp 6: Tìm x: 1)(2/3.x-32):2/3=3 và 1/3 2)(3/7-1/4+5/14):x=15% 3)x/2 – 2/5=-1/10 Helpppppppp!Gấp!!

Tháng Một 2, 2023 Toán học 2 Comments 0 views

Toán Lớp 6: Tìm x:
1)(2/3.x-32):2/3=3 và 1/3
2)(3/7-1/4+5/14):x=15%
3)x/2 – 2/5=-1/10
Helpppppppp!Gấp!!

Comments ( 2 )

  1. khanhlanchau
    khanhlanchau
    2 Tháng Một, 2023 at 1:14 chiều
    Reply
    1)(2/3x-32):2/3=3 1/3
    ->x-48=10/3
    ->x=10/3+48
    ->154/3
     2)(3/7-1/4+5/14):x=15%
    ->(11/14-1/4):x=15/100
    ->15/28:x=3/20
    ->x=15/28:3/20
    ->x=25/7
    3)x/2-2/5=-1/10
    ->x/2=-1/10+2/5
    ->x/2=3/10
    ->10x=6
    ->x=3/5

  2. minhhaanh
    minhhaanh
    2 Tháng Một, 2023 at 1:14 chiều
    Reply
    1)
    (2/3x-32):2/3=3 1/3
    \to (2/3x-32):2/3=10/3
    \to 2/3x-32=10/3 . 2/3
    \to 2/3x-32=20/9
    \to 2/3x=20/9+32
    \to 2/3x=308/9
    \to x=308/9:2/3
    \to x=154/3
    Vậy x=154/3
    2)
    (3/7-1/4+5/14):x=15%
    \to 15/28:x=3/20
    \to x=15/28:3/20
    \to x=25/7
    Vậy x=25/7
    3)
    x/2-2/5=-1/10
    \to x/2=-1/10+2/5
    \to x/2=3/10
    \to 10.x=3.2
    \to 10.x=6
    \to x=6/10
    \to x=3/5
    Vậy x=3/5
     

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

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