A)6x 3/8 – 1/5 B) 1/6 x 5/4 : 4 + 1/2 C) 5/6 – 3/4 + 6/7 Giúp ạ !!! Ko chép mạng

2 bình luận về “A)6x 3/8 – 1/5 B) 1/6 x 5/4 : 4 + 1/2 C) 5/6 – 3/4 + 6/7 Giúp ạ !!! Ko chép mạng”

1. Giải đáp:

   a) 6 xx 3/8 – 1/5

   = 9/4 – 1/5

   = 45/20 -4/20

   = 41/20

   $\\$

   b) 1/6 xx 5/4 : 4 + 1/2

   = 5/24 xx 1/4 + 1/2

   = 5/96 + 1/2

   = 53/96

   $\\$

   c) 5/6 – 3/4 + 6/7

   = 10/12 – 9/12 + 6/7

   = 1/12 + 6/7

   = 79/84

    

   Trả lời
2. A) 6 xx 3/8 – 1/5

   =  9/4 – 1/5

   = 41/20

   _________________________

   B) 1/6 xx 5/4 : 4 + 1/2

   = 5/24 : 4 + 1/2

   = 5/96 + 1/2

   = 53/96

   _________________________

   C) 5/6 – 3/4 + 6/7

   = 1/12 + 6/7

   = 79/84

   @ma

    

   Trả lời