Answer:
A. He should subtract 1 1\2 instead of adding it
B. he should subtract 1 1\2 instead
C. the answer should be 3 3\22
Step-by-step explanation:
4 7\11 - 1 1\2
4 14\22 - 1 11\22
= 3 3\22
just wanted to let you know you didn't attach a picture would love to answer question in comments once I can see the photo