{3/4-5/12}*3-1/16:1/8
1) 3/4 - 5/12 = 4/12
2) 4/12 * 3 = 1
3) 1 - 1/16 = 15/16
3) 15/16 : 1/8 = 15/16 * 8/1 = 120/16 = 7 1/2
((9-5)/12)*3-1/16*8/1= 4/12*3-1/2=1-1/2=1/2