The middle right is 145-90, so 55°. I'm not sure about the others
Answer: last option.
Step-by-step explanation:
- Subtract the fractions that are in the numerator.
- Add the fractions that are in the denominator.
Then:

- Multiply the numerator of the fraction on the top by the denomianator of the fraction on the bottom.
- Simplify.
Then:
