bonjour
2 m 24 = 144 min
3 min 18 = 198 min
144 = 2 x 72
72 = 2 x 36
36 = 2 x 18 décomposition de 144 = 2 ⁴ x 3 ²
18 = 2 x 9
9 = 3 x 3
3 = 3 x 1
198 = 2 x 99
99 = 3 x 33 décomposition = 2 x 3 ² x 11
33 = 3 x 11
11 = 11 x 1
PPCM = 2 ⁴ x 3 ² x 11 = 1 584 min = 26 min et 24 s
17 + 26 min 24 s = 17 h 26 min 24 s