1) 8 8/45-11/2=8 16/90-1 45/90=7 90/90+16/90-1 45/90=7 106/90- 1 45/90= -;6 61/90;
2) 2 7/90+6 61/90=8 68/90=8 34/45;
3) 2 7/15-1 1/12=2 28/60-1 5/60 = 1 23/60;
4) 1 23/60+8 34/45=1 69/180+8 136/180=9 205/180=10 25/180=10 5/36;
ответ: 10 5/36
1) 8 8/45-11/2=8 16/90-1 45/90=7 90/90+16/90-1 45/90=7 106/90- 1 45/90= -;6 61/90;
2) 2 7/90+6 61/90=8 68/90=8 34/45;
3) 2 7/15-1 1/12=2 28/60-1 5/60 = 1 23/60;
4) 1 23/60+8 34/45=1 69/180+8 136/180=9 205/180=10 25/180=10 5/36;
ответ: 10 5/36