Пошаговое объяснение:
1. 6:9*10=60/9=20/3=6 2/3
2. 8/21:4*9=72/84=18/21=6/7
3. 4 1/2:3*4=9/2:3*4=36/6=6
4. 9/14*8=72/14=36/7=5 1/7
5. 4/15*6/7=24/105=8/35
6. 3/8*3 1/9=3/8*28/9=84/72=21/18=7/6
Пошаговое объяснение:
1. 6:9*10=60/9=20/3=6 2/3
2. 8/21:4*9=72/84=18/21=6/7
3. 4 1/2:3*4=9/2:3*4=36/6=6
4. 9/14*8=72/14=36/7=5 1/7
5. 4/15*6/7=24/105=8/35
6. 3/8*3 1/9=3/8*28/9=84/72=21/18=7/6