D??? aide moi stpl en plus jai in test sur Sa

Bonsoir
C = - 3/13 + - 2/13
C = - 3/13 - 2/13
C = - 5/13
D = - 4/17 + 2/17
D = - 2/17.
G = 5/11 + - 1/11
G = 5/11 - 1/11
G = 4/11
H = - 1/4 + - 3/4 + 5/4
H = - 1/4 - 3/4 + 5/4
H = - 4/4 + 5/4
H = 1/4.