Question

75 to 45 simplest form

Answer 1

75 : 45 = 15 : 9 (divided both number by 5 )
            = 5 : 3 ( divided both numbers by 3 )

hence, 5 : 3 is the simplest form of 75 : 45
Or you can write it in the fraction form = 5 / 3

Answer 2

75/45 in the simplest form is 5:3, 5 to 3, or 5/3