Divide the numerator and the denominator by their greatest common factor.
In this fraction, that's 15.
2/5
75 over 100 equals 3 over 4.
45/75 = 3/5
2/3
75/100 = 15/20 = 3/4
Yes: 51/75 = 3x17/3x25 = 17/25
75 * 30/100 = 2250/100. If you want to simplify: 2250/100 = 225/10 = 45/2.
1 7/30
No - it will simplify further - to 75/169
2/5
12/30 = 2/5
6/30 = 1/5.