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

Toán Lớp 6: Tìm x ∈ Z, biết: x + (-23) = (-100) + 77

Toán Lớp 6: Tìm x ∈ Z, biết: x + (-23) = (-100) + 77

Comments ( 2 )

  1. x+(-23)=(-100)+77
    =>x-23=-100+77
    =>x-23=-23
    =>x=-23+23
    =>x=0 
    Vậy x=0.

  2. x+(-23)=(-100)+77
    x+(-23)=-(100-77)
    x+(-23)=(-23)
    x=(-23)-(-23)
    x=0
    Xin trả lời hay nhất + 5* + cảm ơn ạ

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

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