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

Toán Lớp 6: (1989 . 1990 + 3978 ) : (1992 . 1991 – 3984 ) giúp mk với mk cần gấp

Toán Lớp 6: (1989 . 1990 + 3978 ) : (1992 . 1991 – 3984 )
giúp mk với mk cần gấp

Comments ( 2 )

  1. (1989 . 1990 + 3978) : (1992 . 1991 – 3984)
    =(3 598 110 + 3978) : (3 996 072 – 3984)
    =3 962 088 : 3 962 088
    = 1
    Chúc học tốt!  ^v^

  2. (1989.1990+3978):(1992.1991-3984)
    Cách 1
    =(1989.1990+3978):(1992.1991-3984)
    =(1989.1990+1989.2):(1992.1991-1992.2)
    =[1989.(1990+2)]:[1992.(1991-2)]
    =(1989.1992):(1992.1989)
    =1
    Cách 2
    =(3,598,110+3978):(3,996,072-3984)
    =3,962,088 : 3,962,088
    =1
    Cho mk xin hay nhất please
    Thank you

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