There is something wrong, 56 supposed to be 5/6 and 7575 is only 75 passengers.
So to solve for this problem:If an airplane carries 75 passengers and if it is 5/6 of the capacity which is x, then we can say that:
5/6 * x = 75
5x/6 = 75
5x = 75 x 6
5x = 450
5x/5 = 450/5
x = 90
The capacity of the airplane is 90
