Bonjour
Effectuer les opérations suivantes :
1. 7/14+5/2 = 7/14 + (5 x 7) / (2 x 7) = 7/14 + 35/14 = 42/14 = (14 x 3) / (14 x 1) = 3
2. 14/4+-5/2 = (2 x 7) / (2 x 2) - 5/2 = 7/2 - 5/2 = 2/2 = 1/2
3. 5/12+19/4 = 5/12 + (19 x 3) / (4 x 3) = 5/12 + 57/12 = 62/12 = (2 x 31) / (2 x 6) = 31/6
4. 4/3*5/3 = 20/9
5. 12/5*9/7 = 108/35
6. 5/-4*-10/5 = 50/20 = (10 x 5) / (10 x 2) = 5/2
7. -13/7*-3/6 = 39/42 = (3 x 13) / (3 x 14) = 13/14.
