(3/4+1/6)*3+(5/6-1/2):9=12/12*3+1/3:9=1*3+1/27=3целых1/9
3/4-5/12)*3-1/16:1/8=4/12*3-8/16=12/12-1/2=6/12=1/2
(3/4+1/6)*3+(5/6-1/2):9=12/12*3+1/3:9=1*3+1/27=3целых1/9
3/4-5/12)*3-1/16:1/8=4/12*3-8/16=12/12-1/2=6/12=1/2