Steps are::
1) 4.5 = 45/10. (removing decimal from the figure.)
2) 45/10 = 9/2. (divide numerator and denominator by 5.)
.45 = 9/20
It is: 12/45 = 4/15 as a fraction in its lowest terms
15/45 = 1/3
It is: 1 and 45/60 which is 7/4 as an improper fraction in its lowest terms
0.45 is fourty-five hundreds. Written as a fraction it is 45/100. In lowest terms it is 9/20.
45 as a fraction 45/100 but in the lowest terms it is 9/20
.45 = 9/20
It is: 12/45 = 4/15 as a fraction in its lowest terms
11/45 is already a fraction in its lowest terms.
45% = 9/20 as a fraction in its lowest terms
45% = 9/20
It is: 45/10 = 9/20 as a fraction in its lowest terms
14/45 is already a fraction in its lowest terms.
9/20= 45/100
45/48 = 15/16 is an equivalent fraction in its lowest terms
15/45 = 1/3
It is: 1 and 45/60 which is 7/4 as an improper fraction in its lowest terms