Subtract 7/9 from 15/28
15/28 - 7/9 is -61/252.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 9 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 28 × 9 = 252,
15/28 = 15 × 9/28 × 9 = 135/252 - Likewise, for the 2nd fraction, since 9 × 28 = 252,
7/9 = 7 × 28/9 × 28 = 196/252 - Subtract the two like fractions:
135/252 - 196/252 = 135 - 196/252 = -61/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/28-7/9 15/28-14/9 15/56-7/9 15/28-7/18 45/28-7/9 15/28-21/9 15/84-7/9 15/28-7/27 75/28-7/9 15/28-35/9 15/28-7/45 15/28-49/9 15/28-7/63