Выполните действие: 1) 5 2/7 - 1/3 + 6 2) 3) 3 5/12 - 4/5 + 31/60 4) 8 6/15 - 5 3/4 + 6

1) 5 2/7 - 1/3 + 6 =5+(6/21-7/21)+6=4 20/21+6=10 20/21

2) 3 5/12 - 4/5 + 31/60 =41/12-4/5+31/60==
205/60-48/60+31/60=188/60=3 2/15

3) 8 6/15 - 5 3/4 + 6=3+(24/60-45/60)+6=
2 39/60+6=8 39/60