I believe the correct answer is 0
Step-by-step explanation:
To solve this question, we use an abbreviation formula called BODMAS which is:
B = Brackets
O = Of
D = Division
M = Multiplication
A = Addition
S = Subtraction
We solve each element that is available in the order of the abbreviated letter.
1. We solve the brackets:

2. We solve the second bracket:

The equation now is 
3. We now solve addition first:

4. Now we solve the subtraction:

The answer then = 0
Answer:
4/5 = 80%
Step-by-step explanation:
4/5 can be multiplied by 20 to get 80/100. Percent is out of hundredths so it becomes 80%.
Step-by-step explanation:
the last one is the correct answer
It is the first number line :)