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

Toán Lớp 4: CKO AI CẦN ĐIỂM: GIÚP TÔI: x+2+x+3+4+x=27( tìm x)

Toán Lớp 4: CKO AI CẦN ĐIỂM: GIÚP TÔI: x+2+x+3+4+x=27( tìm x)

Comments ( 2 )

  1. x + 2 + x + 3 + 4 + x = 27
    x3 + ( 2 + 3 + 4 ) = 27
    x3 + 9 = 27
    x3 = 27 – 9
    x3 = 18
    x = 18 div 3
    x = 6
    Vậy x = 6

  2. x+2+x+3+4+x=27
    =>x+x+x+2+3+4=27
    =>x xx3+9=27
    =>x xx3=27-9
    =>x xx3=18
    =>x=18:3
    =>x=6
    Vậy x=6.

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

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