Answer:
Flip 5/1 to 1/5 so it is 1/5
Make improper. 18/5 to 5/18 so the answer is 5/18
11/4
23/4 flip to 4/23 is your answer
13/5 / 2/7
13/5 x 7/2 = 91/10 so 9 and 1/10 is your answer
Answers in order
1/5
5/18
11/4
4/23
9 and 1/10
Step-by-step explanation: