Sagot :
1.3-8/10
=30/10-8/10
=22/10
=11/5
= 2 and 1/5
2.4-2/5
=20/5-2/5
=18/5
=3 and 3/5
3.2-3/8
=16/8-3/8
=13/8
=1 and 5/8
4.3-3/7
=21/7-3/7
=18/7
=2 ans 4/7
5.5-4/9
=45/9-4/9
=41/9
=4 and 5/9
1.3-8/10
=30/10-8/10
=22/10
=11/5
= 2 and 1/5
2.4-2/5
=20/5-2/5
=18/5
=3 and 3/5
3.2-3/8
=16/8-3/8
=13/8
=1 and 5/8
4.3-3/7
=21/7-3/7
=18/7
=2 ans 4/7
5.5-4/9
=45/9-4/9
=41/9
=4 and 5/9