(9/4+11/3):(17/2-7/5)*6/5= 1
1. 9/4+11/3 = 27/12+44/12 = 71/12 = 5 11/12
2. 17/2 - 7/5 = 85/10 - 14/10 = 71/10 = 7 1/10 (7,1)
3. 5 11/12 : 7 1/10 = 71/12 : 71/10 = 71/12 * 10/71 = 5/6
4. 5/6 * 6/5 = 1
(9/4+11/3):(17/2-7/5)*6/5= 1
1. 9/4+11/3 = 27/12+44/12 = 71/12 = 5 11/12
2. 17/2 - 7/5 = 85/10 - 14/10 = 71/10 = 7 1/10 (7,1)
3. 5 11/12 : 7 1/10 = 71/12 : 71/10 = 71/12 * 10/71 = 5/6
4. 5/6 * 6/5 = 1