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

Toán Lớp 4: bài 4: Tìm x a) X ×4+6 ×X=570

Toán Lớp 4: bài 4: Tìm x
a) X ×4+6 ×X=570

Comments ( 2 )

  1. x xx 4 + 6 xx x =570
    x xx (4+6)=570
    x xx 10 =570
    x=570:10
    x=57

  2. Giải đáp: 
    a) x×4+6×x=570
    ⇒ x×(4+6)=570
    ⇒ x×10=570
    ⇒ x=57
     

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

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