Answer:

11. 13/4

12. 5/7

13. 26/73

14. 16/1

15. 34/854

Step-by-step explanation:

11. 5/6 x 7/8 (5.6)x(7.8)=13.4

12. 9/10 - 3/4 (9.10)-(3.4)=5.7

13. 1 3/5 + 1 2/3 + 24/15 (1.3.5)+(1.2.3)+(24.15)=26.73

14. 7x2/3 (7)x(2.3)16.1

15. 3/7 x 9/12 (3.7)x(9.12)=34.854

11.2.79166666667

12.0.54

13diko po alam

14.4.66666666667

15?