Answer:
10
Step-by-step explanation:
We'll note the numbers as 

The answer is the last one, 81/16
Answer:
The answer is B
Step-by-step explanation:
Answer: The additive inverse of -11/-13 is 11/13
Step-by-step explanation: The additive inverse is the opposite sign. (positive or negative). It's the amount that needs to be added or subtracted to get 0.