Answer:
15/8 and 1 7/8
35/4 and 8 3/4
40/12 and 3 1/3
Explanation:
15/8 and 1 7/8:
Convert the improper fraction into a mixed number:

Calculate the sum or difference:

Check equivalency: True
Answer: True
=================================================================
35/4 and 8 3/4
Convert the improper fraction into a mixed number:

Calculate the product or quotient:

Calculate the sum or difference:

Check equivalency: True
Answer: True
================================================================
23/6 and 4 1/6
Convert the improper fraction into a mixed number:

Calculate the product or quotient:

Calculate the sum or difference:

Check equivalency: False
Answer: False
===============================================================
40/12 and 3 1/3
Reduce the fraction: 10/3
Convert the improper fraction into a mixed number:

Calculate the product or quotient:

Calculate the sum or difference:

Check equivalency: True
Answer: True
================================================================
11/4 and 2 1/2
Convert the improper fraction into a mixed number:

Calculate the product or quotient:

Calculate the sum or difference:

Check equivalency: False
Answer: False