which of the following is equal to (2x/5 -9) +9?

Question

A 2x/5
B 5x/2
C 2x-45/5
D (2x-9)+45

Answer 1

1. A
2. B
3. B
4. C
5. B
6. D
7. B
8. D
9. B
10. A
11. B
12. B
13. D
14. B
15. C
16. B
17. C
100%

Answer 2

( 2 x / 5 - 9 ) + 9 = 2 x / 5 - 9 + 9 = 2 x / 5

What is so hard here?