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

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

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

Comments ( 2 )

  1. ( 6 – 2/3 + 1/2) – ( 5 + 5/3- 3/2) – ( 3 – 7/3 + 5/2)
    = 6 – 2/3 + 1/2 – 5 – 5/3 + 3/2 – 3 + 7/3 – 5/2
    = ( 6 – 5 – 3) – ( 2/3 + 5/3 – 7/3) + ( 1/2 + 3/2 – 5/2)
    =-2 – 0 + (-1/2)
    =-2 – 1/2
    = -4/2 – 1/2
    = -5/2

  2. Giải đáp:
    -5/2
    Lời giải và giải thích chi tiết:
    ( 6- 2/3 + 1/2 ) – ( 5 + 5/3 – 3/2 ) – ( 3 – 7/3 + 5/2 )
    = 6 – 2/3 + 1/2 – 5 – 5/3 + 3/2 – 3 + 7/3 – 5/2
    = ( 6 – 5 – 3 ) + ( -2/3 – 5/3 + 7/3 ) + ( 1/2 + 3/2 – 5/2 )
    = -2 + 0 + ( -1/2 )
    = -2 + ( -1/2 )
    = -5/2

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