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

Toán Lớp 4: Tìm x : 5218 x x= 70 X 5218 B, : X x 643 = 643 x 258

Toán Lớp 4: Tìm x : 5218 x x= 70 X 5218
B, : X x 643 = 643 x 258

Comments ( 2 )

  1. a) $5218×x=70×5218$
    $5218×x=365260$
    $x=365260:5218$
    $x=70$
    b) $x×643=643×258$
    $x×643=165894$
    $x=165894:643$
    $x=258$
    Chúc bạn học tốt, cho mình câu trả lời hay nhất+5*+cám ơn nha!!!

  2. A)
    5218 x x= 70 X 5218
    vì 5218 = 5218 -> x = 70
    B)
    X x 643 = 643 x 258
    vì 643 = 643 -> x = 258

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