bonjour
C = 7.2 + 6.3 - 1.5 - 7.9 - 4.6
C = 13.5 - 14
C = - 0.5
D = 7.1 - 9.2 - 5.4 - 6.3 - 4.7
D = 7.1 - 25.6
D = - 18.5
E = 8.3 + 7. 2 + 6.5 - 6.5 - 0.7 - 4. 1
E = 15.5 - 4.8
E = 10.7
