7/39*(11/14-1/6)=1/9
11/14-1/6=33/42-7/42=26/42
7/39*26/42=2/18=1/9
24/49:6/7+1/14=9/14
24/49:6/7=24/49*7/6=4/7
4/7+1/14=8/14+1/14=9/14
7/39*(11/14-1/6)=1/9
11/14-1/6=33/42-7/42=26/42
7/39*26/42=2/18=1/9
24/49:6/7+1/14=9/14
24/49:6/7=24/49*7/6=4/7
4/7+1/14=8/14+1/14=9/14