Х+1/3=5/6
х=5/6-1/3
х=5/6-2/6
х=3/6=1/2
1/5-х=1/10
х=1/5-1/10
х=2/10-1/10
х=1/10
7/10-с=1/5
с=7/10-1/5
с=7/10-2/10
с=5/10=1/2
у:8=1/10
у=8*1/10
у=8/10=4/5
1/9*b=1/3
b=1/3:1/9
b=1/3*9/1
b=3
у-1/12=5/6
у=1/12+5/6
у=1/12+10/12
у=11/12
b-1/6=1/6
b=1/6+1/6
b=2/6=1/3
у:3=2/7
у=3*2/7
у=6/7
b-1/8=1/4
b=1/8+1/4
b=1/8+2/8
b=3/8
а+1/6=7/12
а=7/12-1/6
а=7/12-2/12
а=5/12
1/8+а=1/2
а=1/2-1/8
а=8/16-2/16
а=6/16=3/8
1/6+х=1/2
х=1/2-1/6
х=6/12-2/12
х=4/12=1/3
у+1/3=1/2
у=1/2-1/3
у=3/6-2/6
у=1/6
b:1/5=1/6
b=1/5*1/6
b=1/30
х*1/3=1/5
х=1/5:1/3
х=1/5*3
х=3/5
а-4/9=1/3
а=4/9+1/3
а=4/9+3/9
а=7/9
с*4=1/5
с=1/5:4
с=1/5*1/4
с=1/20
4:b=1/4
b=4:1/4
b=4*4
b=16
5*у=1/2
у=1/2:5
у=1/2*1/5
у=1/10
с-1/6=1/3
с=1/6+1/3
с=1/6+2/6
с=3/6=1/2