(3 – 2 va 1/3 + 0,25% ) : ( 4 – 5 va 1/6 + 2 va 1/4)

2 bình luận về “(3 – 2 va 1/3 + 0,25% ) : ( 4 – 5 va 1/6 + 2 va 1/4)”

1. (3-2 1/3+0,25%):(4-5 1/6+2 1/4)

   =(3-7/3+1/400):(4-31/6+9/4)

   =(2/3+1/400):(-7/6+9/4)

   =803/1200:13/12

   =803/1200 . 12/13

   =9636/15600

   =(9639:12)/(15600:12)

   =803/1300

   Trả lời
2. Bài làm:

   (3 -21/3 + 0,25%) : (4 – 51/6 + 21/4)

   = (3 – 7/3 + 1/400) : (4 – 31/6 + 9/4)

   = (2/3 + 1/400) : (-7/6 + 9/4)

   = 803/1200 : 13/12

   = 803/1200 : 1300/1200

   = 803/1200 x 1200/1300

   = 803/1300

   @Kathie

   (Bạn tham khảo)

    

   Trả lời