X - 1/8=5/16 - 1/12
x=5/16 - 1/12+1/8
x=15/48 - 4/48+6/48
x=17/48
24/25 -(x+1/4)=2/15
x+1/4=24/25 - 2/15
x+1/4=72/75 - 10/75
x+1/4=62/75
x=62/75 - 1/4
x=248/300 - 75/300
x=173/300
1/6+x=17/18 - 5/12
x=34/36 - 15/36 - 6/36
x=13/36
(x-1/6) -1/7=2/63
x-1/6=2/63 + 1/7
x-1/6=2/63 +9/63
x-1/6=11/63
x=11/63+1/6
x=22/126+21/63
x=1/63
......
1/16+ х=17/18 - 5/12
х=17/18 - 5/12 - 1/16
х=136/144 - 60/144 - 9/144
х=67/144