Bonjour,
B=(5/ 3 + 4/ 3) / (3/ 5 -3/ 7)
5/3 + 4/3 = 9/3 = 3
3/5 - 3/7 = 21/35 - 15/35 = 6/35
(3)/ (6/35)
= 3 * 35/6
= 105/6 = 35/2
* C=(2/ 3 +1) × (2/ 3 + 1) (1/ 2 + 1 / 4)
2/3 + 1 = 2/3 + 3/3 = 5/3
1/2 +1/4 = 2/4+1/4 = 3/4
5/3 * 5/3 = 25/3
tu n'as pas mis le signe entre (2/ 3 + 1) et (1/ 2 + 1 / 4)
