Sagot :
D = 1/2+13/2 E = 3/5-(1/5-21/5) F = 7- 5/6
D= 14/2 E = 3/5 - 1/5 + 21/5 F = 7x6/1x6 - 5/6
D = 7 E = 23/5 F = 42/6 -5/6
E = 4.6 F = 37/6
G = 4/5 - 16/15 H= 8/7 - 7/3 I= 1/2 x 5/2
G = 4x3/5x3 - 16/15 H = 8x3/7x3 - 7x7/3x7 I= 5/4
G= 12/15 - 16/15 H= 24/21 - 49/21
G = -4/15 H = -25/21
J=11/2 x 20/-33
J= 220/-66