Answer:
For the first triangle:

For the second triangle:

Explanation:
To find area of right triangles:

- Turn mixed numbers into improper fractions, then decimals. It's not required but I tend to find working with decimals much easier ;)
- Multiply them together
- Divide by 2
And you are good to go!
Please feel free to comment, give feedback, ask questions, and correct me if I am wrong!
Have a great day!
:)