Subtract 7/28 from 15/9
1st number: 1 6/9, 2nd number: 7/28
15/9 - 7/28 is 17/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 28 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 9 × 28 = 252,
15/9 = 15 × 28/9 × 28 = 420/252 - Likewise, for the 2nd fraction, since 28 × 9 = 252,
7/28 = 7 × 9/28 × 9 = 63/252 - Subtract the two like fractions:
420/252 - 63/252 = 420 - 63/252 = 357/252 - After reducing the fraction, the answer is 17/12
- In mixed form: 15/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/9-7/28 15/9-14/28 15/18-7/28 15/9-7/56 45/9-7/28 15/9-21/28 15/27-7/28 15/9-7/84 75/9-7/28 15/9-35/28 15/45-7/28 15/9-49/28 15/63-7/28