Subtract 9/12 from 28/75
28/75 - 9/12 is -113/300.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 12 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 75 × 4 = 300,
28/75 = 28 × 4/75 × 4 = 112/300 - Likewise, for the 2nd fraction, since 12 × 25 = 300,
9/12 = 9 × 25/12 × 25 = 225/300 - Subtract the two like fractions:
112/300 - 225/300 = 112 - 225/300 = -113/300
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/75-9/12 28/75-18/12 28/75-9/24 84/75-9/12 28/75-27/12 28/75-9/36 28/75-45/12 28/75-9/60 28/75-63/12 28/75-9/84