(3-4/7)*х=5 2/3
(21/7-4/7)*х=17/3
17/7х=17/3
х=17/3:17/7
х=17/3*7/17
х=7/3=2 1/3
(1 5/6-3/8)*х=2 1/2
(11/6+3/8)*х=5/2
(44/24+9/24)*х=5/2
53/24*х=5/2
х=5/2:53/24
х=5/2*24/53
х=60/53=1 7/53
(5/8-1/4):х=1/6
(5/8-2/8):х=1/6
3/8:х=1/6
х=3/8:1/6
х=3/8*6/1
х=9/2=4 1/2
х*(11/12-1/4)=3/8
х*(11/12-3/12)=3/8
х*8/12=3/8
х*2/3=3/8
х=3/8:2/3
х=3/8*3/2
х=9/16