Question

15/24+1/6; 2/5+4/25; 3/32+5/8; 10/21-1/3; 4/9-13/45; 3/4-1/3; 7/8-5/12; 3/8+1/18; 9/14-5/12; 41/54-35/72; 43/140+41/150;