A) ( 2 - 1/2).(-3/4 + 1/2)-1/8; b)5/11 . 5/7-5/7.14/+5/7.2/11-5/7.4/11; b) 5/12.4/9-29/12+5/9.5/12; d)(1/13+3/31-1/2023).(1/2-1/3-1/6)

A/( 2 - 1/2).(-3/4 + 1/2)-1/8
B/5/11 . 5/7-5/7.14/+5/7.2/11-5/7.4/11
C/5/12.4/9-29/12+5/9.5/12
D/(1/13+3/31-1/2023).(1/2-1/3-1/6)