Bonsoir
21 / 14
= (21 / 7) / (14 / 7)
= 3 / 2
24 / (-22)
= (24 / 2) / (-22 / 2)
= 12 / (-11)
- (-25 / 55)
= 25 / 55
= (25 / 5) / (55 / 5)
= 5 / 11
45 / 63
= (45 / 9) / (63 / 9)
= 5 / 7
- (-24 / (-30)
= -24 / 30
= (-24 / 3) / (30 / 3)
= -8 / 10
= (-8 / 2) / (10 / 2)
= -4 / 5
36 / 42
= (36 / 6) / (42 / 6)
= 6 / 7
- (15 / -18)
= 15 / 18
= (15 / 3) / (18 / 3)
= 5 / 6
25 / 200
= (25 / 25) / (200 / 25)
= 1 / 8
555 / 333
= (555 / 111) / (333 / 111)
= 5 / 3
39 / 52
= (39 / 13) / (52 / 13)
= 3 / 4
Voilà j'espère avoir pu t'aider ^^