1/10 + 1/15 = 3/30 + 2/30 = 5/30 = 1/6
1/10 + 1/25 = 2/50 + 2/50 = 4/50 = 2/25
1/30 + 1/40 = 4/120 + 3/120 = 7/120
1/30 + 1/50 = 5/150 + 3/150 = 8/150 = 4/75
1/70 + 1/60 = 1/70 + 2/140 = 2/140 + 1/140 = 3/140
1/50 + 1/80 = 2/100 + 1/100 = 3/100 = 3/100
1/60 + 1/15 = 5/60 + 4/60 = 9/60 = 3/20
1/24 + 1/120 = 5/120 + 1/120 = 6/120 = 1/20
1/10 + 1/15 = 3/30 + 2/30 = 5/30 = 1/6
1/10 + 1/25 = 2/50 + 2/50 = 4/50 = 2/25
1/30 + 1/40 = 4/120 + 3/120 = 7/120
1/30 + 1/50 = 5/150 + 3/150 = 8/150 = 4/75
1/70 + 1/60 = 1/70 + 2/140 = 2/140 + 1/140 = 3/140
1/50 + 1/80 = 2/100 + 1/100 = 3/100 = 3/100
1/60 + 1/15 = 5/60 + 4/60 = 9/60 = 3/20
1/24 + 1/120 = 5/120 + 1/120 = 6/120 = 1/20