Question

Wykonaj działania.Wynik przedstaw w najprostszej postaci. Są to ułamki. 8-7 9/10 25 - 4 1/8 2 3/5 - 4 1/8 7 3/9 - 7/9 4 1/3 - 2/3 8 2/5 - 5 4/5 7 2/7 - 3/5/7 10 1/8 - 4/7/8 Oblicz ułamki... 10: 2/3 x 1 /1/2 12 x 2 3/4 : 2 3/4 4 1/2 :1 1/2 - 1 3/4 20 - 6 3/4 : 4 1/2

Answer 1

1)          8- 7 9/10 = 80/10 - 79/10 = 1/10

25 - 4 1/8=   200/8 - 33/8 = 167/8 = 20 7/8

2 3/5 - 4 1/8 =  13/5- 33/8 = 104/40 - 165/40 = -61/40 

7 3/9 - 7/9 = 66/9 - 7/9 = 59/9

4 1/3 - 2/3 = 13/3 - 2/3 = 11/3

8 2/5 - 5 4/5 = 42/5 - 29/5 = 13/5 = 2 3 / 5 

7 2/7 - 3 5/7 = 51/7 - 26/7 = 25/7 = 34/7

10 1/8 - 4 7/8 = 81/8 - 39/8 = 42/8 = 5 2/8 

 

2)        10: 2/3 x 1 1/2 = 10/1 * 3/2 * 1 1/2 = 30/2 * 3/2 = 90/4 = 22 2/4

12 x 2 3/4 : 2 3/4 = 12/1 * 11/4 * 4/11 = 528/44 = 12

4 1/2 :1 1/2 - 1 3/4 =    72/24 - 42/24 = 30/24 = 1 4/24

20 - 6 3/4 : 4 1/2 =  20/1 - 4/27 * 9/2 = 20/1 - 36/54 = 1080/54 - 36/54 =1044/54 = 19 18/54