Answer:
14 rows
Step-by-step explanation:
45 people
18 photos
63 pets
The greatest common multiple of all three categories is 9
therefore, if Jenny were to have 9 pictures in each row, she would have:
45/9 = 5 rows with photos of people
18/9 = 2 rows with photos of landscapes
63/9 = 7 rows with photos of pets
In total, Jenny will have 14 rows of pictures, each row containing only one type of photo
