Bonsoir,
I)
5/2 +1/6 = 15/6 + 1/6 = 16/6 = 8/3
2/3 +2 = 2/3 + 6/3 = 8/3
8/3 * 3/8 = 24/24
= 1
J)
2/5 + 3 = 2/5 + 15/5 = 17/5
3/ (17/5) = 3* 5/17 = 15/17
2+ 15/17 = 34/17 + 15/17
= 49/17