Subtract 28/54 from 15/9
1st number: 1 6/9, 2nd number: 28/54
15/9 - 28/54 is 31/27.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 54 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 9 × 6 = 54,
15/9 = 15 × 6/9 × 6 = 90/54 - Likewise, for the 2nd fraction, since 54 × 1 = 54,
28/54 = 28 × 1/54 × 1 = 28/54 - Subtract the two like fractions:
90/54 - 28/54 = 90 - 28/54 = 62/54 - After reducing the fraction, the answer is 31/27
- In mixed form: 14/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/9-28/54 15/9-56/54 15/18-28/54 45/9-28/54 15/9-84/54 15/27-28/54 75/9-28/54 15/45-28/54 15/63-28/54