Part 1:
A and B are already in lowest terms
C 3/8
D 7/9
Part 2:
A 5 * 11
B 3 * 3 * 3
C 2 * 2 * 3 * 5
:)))
Answer:
subtract 3 from both sides.
Answer: 90
450/500 = 9/10 = 0.9 = 90%