can you help me soloved this it's not hard I will mark as brainliest the one who would solve this.

Answer: 9 rows total
Step-by-step explanation:
You want to find a number that divides into 28 and 35 to find the number of students in each row (least common multiple). 7 works.
28/7=4 rows
35/7=5 rows
4+5=9 rows total.