2 2/9:у= 3 19/27 : 3 1/3
21/9:у=100/27: 10/1
21/9:у=100/27* 1/10
21/9:у=10/27* 1/1
21/9:у=10/27
у= 21/9: 10/27
у=21/9* 27/10
у=21/1 * 3/10
у=63/10
у= 6 3/10
