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

Toán Lớp 6: 0,75.2019-(13/11-50%):2/11 ( gạch chéo là phần nha)

Toán Lớp 6: 0,75.2019-(13/11-50%):2/11
( gạch chéo là phần nha)

Comments ( 2 )

  1. 0,75.2019-(13/11-50%):2/11
    =3/4.2019-(13/11-1/2).11/2
    =3/4.2019-(26/22-11/22).11/2
     =3/4. 2019-15/22. 11/2
    =6057/4-15/4
    =(6057-15)/4
    =6042/4=3021/2.

  2. Giải đáp+Lời giải và giải thích chi tiết:
     0,75 . 2019 – ((13)/(11)-50%):2/(11)
    =3/4 . 2019 – ((13)/(11) – 1/2) .(11)/2
    = 3/4 . 2019 – ((26)/(22)-(11)/(22)) . (11)/2
    = 3/4 . 2019 -(15)/(22) .(11)/2
    = 3/4. 2019 – (15)/4
    =3/4 . 2019 – 3/4 .5
    =3/4 .(2019-5)
    =3/4 . 2014
    =3/2 . 1007
    =(3021)/2

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

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