a. -1/4 . 1/3 . 3/11 b. 25/14 . 3/-8 .-2/15 c. 5/-2 . -9/5 . 12/81 d. -9/11 ÷ 28/5 . 2/9

0 bình luận về “a. -1/4 . 1/3 . 3/11 b. 25/14 . 3/-8 .-2/15 c. 5/-2 . -9/5 . 12/81 d. -9/11 ÷ 28/5 . 2/9”

1. a) -1/4 . 1/3 . 3/11

   = -1/12 . -1/44

   = 1/528

   b) 25/14 . 3/-8 . -2/15

   = -75/112 . -2/15

   = 5/56

   c) 5/-2 . -9/5 . 12/81

   = 9/2 . 12/81

   = 2/3

   d) -9/11 : 28/5 . 2/9

   = -9/11 . 5/28 . 2/9

   = -45/308 . 2/9

   = -5/154

   Bình luận

2. a. -1/4 . 1/3 . 3/11 = -1/12 . 3/11 = -1/44

   b. 25/14 . 3/-8 . -2/15 = -75/112 . -2/15 = 5/56

   c. 5/-2 . -9/5 . 12/81 = 9/2 . 12/81 = 2/3

   d. -9/11 : 28/5 . 2/9 = -45/308 . 2/9 = -5/154

   Bình luận