Réponse :
Explications étape par étape
Bonjour
2/3 + (-1/6) = 4/6 - 1/6 = 3/6 = 1/2
-1/6 + 5/2 = -1/6 + 15/6 = 14/6 = 7/3
5/2 + 7/4 = 10/4 + 7/4 = 17/4
1/2 + 7/3 = 3/6 + 14/6 = 17/6
7/3 + 17/4 = 28/12 + 51/12 = 79/12
17/6 + 79/12 = 34/12 + 79/12 = 113/12
.............113/12
.........17/6 | 79/12
......1/2 | 7/3 | 17/4
.2/3 | -1/6 | 5/2 | 7/4