There are 17 rows of seats in a cinema. There are 22 seats in each row. A film was shown in the cinema on Friday night. Each ticket for the film cost £7.50. The sale of tickets for that night made £2587.50. How many tickets were not sold?

step-by-step explanation:

we are given expression: and .

in order to find it's greatest common factor, let us break it into smaller parts.

let us find greatest common factor of 54 and 27 first.

54 = 27 × 2

27 = 27 × 1

now, let us find the greatest common factor of m and m^3.

now, let us find the greatest common factor of n^4 and n^2.

therefore, following expressions are part of the greatest common factor of 54mn^4 and 27m^3n^2.