First, if you convert the improper fraction 9/2 to a mixed number, it will be equal to 9/2.
9/2 = 4 1/2
And if you multiply the top and bottom of a fraction with an integer number, you will have a fraction that is equal to fraction you began with.
I'll use 5 for this example.
9/2 * 5/5 = 45/10
