Who can do this? Pls help

Answer:
15. 2
16. [tex]\frac{27}{16}[/tex] or 1.6875
17. [tex]\frac{17}{30}[/tex] or 0.5666666667
18. 5
19. [tex]\frac{35}{8}[/tex] or 4.375
20. [tex]\frac{22}{5}[/tex] or 4.4
Step-by-step explanation:
Find common denominators. Multiply then simplify (if possible).