Bonjour
1 + 2/7
= 7/7 + 2/7
= 9/7
7/13 + 1
= 7/13 + 13/13
= 20/13
9/5 - 1
= 9/5 - 5/5
= 4/5
1 - 8/17
= 17/17 - 8/17
= 9/17
2 + 3/8
= 16/8 + 3/8
= 19/8
7/15 + 3
= 7/15 + 45/15
= 52/15
5 - 3/4
= 20/4 - 3/4
= 17/4
100/9 - 9
= 100/9 - 81/9
= 19/9
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Bonjour
1 + 2/7
= 7/7 + 2/7
= 9/7
7/13 + 1
= 7/13 + 13/13
= 20/13
9/5 - 1
= 9/5 - 5/5
= 4/5
1 - 8/17
= 17/17 - 8/17
= 9/17
2 + 3/8
= 16/8 + 3/8
= 19/8
7/15 + 3
= 7/15 + 45/15
= 52/15
5 - 3/4
= 20/4 - 3/4
= 17/4
100/9 - 9
= 100/9 - 81/9
= 19/9