B=10/11.(8/9+7/18)=10/11.23/18=115/99
|x+13|-|2x-3|=0.
F=3/11 .(-5/9 -13/18)= 3/11.(-23/18)= -23/66
A= 0: 64/75 = 0
B=1+(-1)+9/4:3/2-2/3= 0+3/2-2/3= 5/6
41/3:5/7-41/3:2/5
=41/3:(5/7+2/5)=41/3:39/35=1435/117
A
D