Oh honey, that fraction is already in its simplest form. 42 over 45 can't be simplified any further. It's like trying to improve on a classic cocktail - sometimes you just gotta leave it be and enjoy it for what it is.
18/42 = 3/7 in its simplest form
35/42 = 5/6
3/7
25/42
7 - 10
18/42 = 3/7 in its simplest form
42% as a fraction in its simplest form is 21/50
35/42 = 5/6
21/34
3/7
25/42
7 - 10
42/55 is in its simplest form
It is: 42/49 = 6/7 in its simplest form
10/7
18/42 = 9/21 = 3/7
12/42 = 2/7