Answer:
D
Step-by-step explanation:
[ Answer ]

[ Explanation ]
- Simplify / Solve: (5 ÷ 5) ÷ 5 · (
- 5)
--------------------------------
(
- 5)
- Apply Rule (
= 1):
= 1
(
- 5)

1 · (
- 5) = 20
= 
20 ÷ 5
= 4
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110/55 is what u get if u add them all up
Answer: 56 - 42
Step-by-step explanation: She gave 2 to EACH of her 21 students. So 2 * 21 = 42. 56 - 42