1)1/3 - 1/5 = 5/15 - 3/15 = 2/153/5 - 1/3 = 9/15 - 5/15 = 4/158/15 - 1/2 = 16/30 - 15/30 = 1/304/7 - 3/10 = 40/70 - 21/70 = 19/70
2)1/3 - 16 = -47/39/14 - 2/7 = 45/9819/100 - 1/10 = 9/1003/5 - 11/25 = 15/25 - 11/25 = 4/25
3)5/6 - 3/8 = 20/24 - 9/24 = 11/249/14 - 9/21 = 27/42 - 18/42 = 9/42 = 3/147/20 - 7/30 = 21/60 - 14/60 = 7/605/12 - 2/9 = 15/36 - 8/36 = 7/36
1)
1/3 - 1/5 = 5/15 - 3/15 = 2/15
3/5 - 1/3 = 9/15 - 5/15 = 4/15
8/15 - 1/2 = 16/30 - 15/30 = 1/30
4/7 - 3/10 = 40/70 - 21/70 = 19/70
2)
1/3 - 16 = -47/3
9/14 - 2/7 = 45/98
19/100 - 1/10 = 9/100
3/5 - 11/25 = 15/25 - 11/25 = 4/25
3)
5/6 - 3/8 = 20/24 - 9/24 = 11/24
9/14 - 9/21 = 27/42 - 18/42 = 9/42 = 3/14
7/20 - 7/30 = 21/60 - 14/60 = 7/60
5/12 - 2/9 = 15/36 - 8/36 = 7/36