h `3/8 . 19 1/3 – 3/8 .33 1/3` l `(12/61 – 31/22 +14/91) . ( 1/2 – 1/3 – 1/6)`

2 bình luận về “h `3/8 . 19 1/3 – 3/8 .33 1/3` l `(12/61 – 31/22 +14/91) . ( 1/2 – 1/3 – 1/6)`”

1. h) 3/8*19 1/3-3/8*33 1/3

   =3/8*58/3-3/8*100/3

   =3/8*(58/3-100/3)

   =3/8*(-14)

   =-21/4

   i) (12/61-31/22+14/91)*(1/2-1/3-1/6)

   =(12/61-31/22+14/91)*(3/6-2/6-1/6)

   =(12/61-31/22+14/91)*0/6

   =(12/61-31/22+14/91)*0

   =0

   Trả lời
2. h,

   3/8 . 19 1/3 – 3/8 . 33 1/3

   = 3/8 . ( 19 1/3 – 33 1/3 )

   = 3/8 . ( – 14 )

   = -21/4

   l,

   ( 12/61 – 31/22 + 14/91 ) . ( 1/2 – 1/3 – 1/6 )

   = ( 12/61 – 31/22 + 14/91 ) . ( 3/6 – 2/6 – 1/6 )

   =  ( 12/61 – 31/22 + 14/91 ) . 0

   = 0

    

   Trả lời