Answer:
40
Step-by-step explanation:
Let the number be y
-1/2 × y = -20
y = -20 ÷ -1/2
y = 20 × 2
y = 40
Cannot reduce, it is already in simplest form. You can convert it to a decimal though, 0.671875
330/3= 110
550/110=5
Answer is 5 books
The answer is 204. Your well