Пж хелп
1. 12 3/8+8 1/6= 7. 3 1/16-1/8=
2. 3 13/15+6 7/10= 8. 7 9/20-5 17/30=
3. 7 5/6-3 2/3= 9. 4 2/7-1 4/9=
4. 8 5/12-6 7/20= 10. 9 7/9-4 5/6=
5. 5-2 7/16= 11. (36 2/3 +3 1/8) - (18-10 5/9) =
6. 6-1 3/5= 12. (x-2 7/8)+3 5/6=4 2/3