The GCF of 42 and 45 is 3.
42/3 = 14
45/3 = 15
42/45 = 14/15
39/45 = (3*13)/(3*15) = 13/15
40% = 0.40 = 40/100 = 2/5 in its simplest form
0.0075
0.0137
The GCF of 30 and 38 is 2. 30/2 = 15 38/2 = 19 30/38 = 15/19
It's already in its simplest form
7 and 75/100 = 7 and 3/4 = 31/4
0.0385
It is: 4 and 625/1000 which can be simplified to 4 and 5/8
11/16 = 0.6875
You work out the HCF of the two numbers and divide them both by it, giving 3/16
As a fraction in its simplest form 0.325 = 13/40