Bonjour,
A = 11/8 + 11/2
A = 11/8 + (11 * 4)/(2 * 4)
A = 11/8 + 44/8
A = 55/8
B = 13/3 - 11/9
B = (13 * 3)/(3 * 3) - 11/9
B = 39/9 - 11/9
B = 28/9
C = 15/7 + 3/2
C = (15 * 2)/(7 * 2) + (3 * 7)/(2 * 7)
C = 30/14 + 21/14
C = 51/14
D = 11/2 - 9/7
D = meme methode que la C
E = -12/5 + 7/4
E = (-12 * 4)/(5 * 4) + (7 * 5)/(4 * 5)
E = -48/20 + 35/20
E = -13/20
Je te laisse faire les 3 derniers. Pose des questions si tu ne comprends pas !
