5/7
both are divisible by seven. 42/49 = 6/7
28/42 = 4/6 = 2/3
Oh, dude, 28 over 42 reduced to its lowest terms is like 2 over 3. You just divide both numbers by their greatest common factor, which in this case is 14. It's like simplifying a fraction, but way less exciting.
Oh, dude, 30 over 42 in its lowest terms is like reducing a fraction to its simplest form. You just divide both numbers by their greatest common factor, which in this case is 6. So, 30 divided by 6 is 5, and 42 divided by 6 is 7. Boom, there you have it, 30 over 42 in its lowest term is 5 over 7. Easy peasy!
3/7
It is: 18/7 in its lowest terms
42 over 204 in lowest terms = 7/34
56 over 42 (56/42) in lowest terms is 4/3 or 11/3
10 over 42 in lowest terms = 5/21
42
21/42 = 1/2
28/42 is 2/3 in its lowest terms
8 over 7
1/42
42/25
4/7