1) 1 7/18 = 18/18 + 7/18 = 25/184/15 = 1/325/18 - 1/3 = (25 - 6) / 18 = 19/18
2) 4 4/5 = 45 + 4 = 24/54 1/6 = 46 + 1 = 25/6
24/5 25/6 = 120/30 25/6 = 500/36
3) 3 1/9 = 28/94 2/3 = 14/3
28/9 : 14/3 = 28/9 * 3/14 = 2
4) 48/45 = 16/151/3 = 5/1516/15 - 5/15 = 11/15
11/15 2 3/11 = 11/15 35/11 = 7/37/3 + 3/5 = (35/15 + 9/15) = 44/15
1) 1 7/18 = 18/18 + 7/18 = 25/18
4/15 = 1/3
25/18 - 1/3 = (25 - 6) / 18 = 19/18
2) 4 4/5 = 45 + 4 = 24/5
4 1/6 = 46 + 1 = 25/6
24/5 25/6 = 120/30 25/6 = 500/36
3) 3 1/9 = 28/9
4 2/3 = 14/3
28/9 : 14/3 = 28/9 * 3/14 = 2
4) 48/45 = 16/15
1/3 = 5/15
16/15 - 5/15 = 11/15
11/15 2 3/11 = 11/15 35/11 = 7/3
7/3 + 3/5 = (35/15 + 9/15) = 44/15