Assuming that each row has the same number of seats we can call the total number of rows r and the total number of seats s. We are looking for the number of seats in each row we we call that x
the number of rows times the number of seats in each row equals the number of total seats. This can be written as follows
r*x=s
We substitute the values we already know to get
9x=675
divide both sides by 9 to get the value for x
x=108.3333 seats in each row
That means there is not an equal number of seats in each row?