1 1/9z+5/6=1 1/2
1 1/9z=1 1/2-5/6
1 1/9z=1 3/6-5/6
1 1/9z=4/6
1 1/9z=2/3
z=2/3:1 1/9
z=2/3:10/9
z=2/3*9/10
z=1/3*9/5
z=1/1*3/5
z=3/5
3 1/15-1 14/15а=1/6
-1 14/15а=1/6-3 1/15
-1 14/15а=5/30-3 2/30
-1 14/15а=-2 27/30
-1 14/15а=-2 9/10
1 14/15а=2 9/10
а=2 9/10:1 14/15
а=29/10:29/15
а=29/10*15/29
а=15/10
а=3/2
а=1,5
3 1/12-1 5/6n=1 17/24
-1 5/6n=1 17/24-3 1/12
-1 5/6n=1 17/24-3 2/24
-1 5/6n=-1 9/24
-1 5/6n=-1 3/8
1 5/6n=1 3/8
n=1 3/8:1 5/6
n=11/8:11/6
n=11/8*6/11
n=6/8
n=3/4
n=0,75