help me w this please
![Help Me W This Please class=](https://ph-static.z-dn.net/files/dc2/066c5f1738fdd20cf67cb2e14d03481d.jpg)
Answer:
3. b
4. a
5. a
3. 1/2 + 3/4 = 1 3/4
4. 1/2 + 1/2= 2/2 or 1
5. 5/9 - 4/9= 1/9