A,(4-2/4-1/2):3/2
= ( 16/4 - 2/4 - 2/4) : 3/2
= 3 : 3/2
= 3 x 2/3
= 2
B,(3-22/12+2/4):5/2
= ( 3 - 11/6 + 1/2) : 5/2
= ( 18/6 - 11/6 + 3/6) : 5/2
= 10/6 : 5/2
= 2/3
A,(4-2/4-1/2):3/2
= ( 16/4 - 2/4 - 2/4) : 3/2
= 3 : 3/2
= 3 x 2/3
= 2
B,(3-22/12+2/4):5/2
= ( 3 - 11/6 + 1/2) : 5/2
= ( 18/6 - 11/6 + 3/6) : 5/2
= 10/6 : 5/2
= 2/3