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

Toán Lớp 6: a) 7.9-14/ 3-17 cần gấp lắm ạ

Toán Lớp 6: a) 7.9-14/ 3-17 cần gấp lắm ạ

Comments ( 2 )

  1. a) ( 7 . 9 – 14 )/( 3 – 17 )
    = ( 63 – 14 )/( – 14 )
    = 49/-14 = ( – 49 )/14

  2. (7.9-14)/(3-17)
    =(63-14)/(3-17)
    = (63-14)/(3+(-17))
    = (49)/(-14)
    = (-49)/(14)

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