4/9
5/6 + 9/1 + 2/3 --> 15/18 + 162/18 + 12/18 = 189/18 --> 10 9/18 --> 10 1/2
11/42 + 5/18 = 34/63
1/5+1/5 = 2/5
4/5 (4 over 5)
5 + -13 + 18 = 5 - 13 + 18 = 10
3/5 + 1/4 = 17/20
(-1, 5)
1/3 + 2/5 = 11/15
5/10 + 1/30 = 8/15
5/6 / 7/18 = 5/6 * 18/7 = 15/7 =2 1/7
1/5 = 2/10Therefore 2/10 + 1/10 = 3/10
5 over 7...