Réponse:
A=(21/-4)//(35/12)
=(21/-4)*(12/35)
=(-3)*(3/5)
=-9/5
B=(-5/4)//10
=(-5/4)*(1/10)
=(-1/4)*(1/2)
=-1/8
C=(12)//(-4/9)
=12*(-9/4)
=3*(-9)
=-27
D=(3-(9/2))//((6/5)+3)
=((6-9)/2)//((6+15)/5)
=(-3/2)//(21/5)
=(-3/2)*(5/21)
=(-1/2)*(5/7)
=-5/14
E=(5-1/4)//(-2*5/3)
=((20-1)/4)//(-10/3)
=(19/4)//(-10/3)
=(19/4)*(-3/10)
=(19*(-3))//(4*10)
=-57/40
F=((3/2)+((5*3)/2))//(((7/3)-(1/6))*(-5/2))
=((3/2)+(15/2))//(((14-1)/6)*(-5/2))
=(18/2)//((13/6)*(-5/2))
=(9)//((13*-5)//(6*2))
=(9) //(-65/12)
=9*(-12/65)
=-108/65
