Subtract 28/9 from 45/75
1st number: 45/75, 2nd number: 3 1/9
45/75 - 28/9 is -113/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 9 is 225
Next, find the equivalent fraction of both fractional numbers with denominator 225 - For the 1st fraction, since 75 × 3 = 225,
45/75 = 45 × 3/75 × 3 = 135/225 - Likewise, for the 2nd fraction, since 9 × 25 = 225,
28/9 = 28 × 25/9 × 25 = 700/225 - Subtract the two like fractions:
135/225 - 700/225 = 135 - 700/225 = -565/225 - After reducing the fraction, the answer is -113/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/75-28/9 45/75-56/9 45/75-28/18 45/75-84/9 45/75-28/27 45/75-28/45 45/75-28/63