Subtract 21/48 from 7/9
7/9 - 21/48 is 49/144.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 48 is 144
Next, find the equivalent fraction of both fractional numbers with denominator 144 - For the 1st fraction, since 9 × 16 = 144,
7/9 = 7 × 16/9 × 16 = 112/144 - Likewise, for the 2nd fraction, since 48 × 3 = 144,
21/48 = 21 × 3/48 × 3 = 63/144 - Subtract the two like fractions:
112/144 - 63/144 = 112 - 63/144 = 49/144
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/9-21/48 7/9-42/48 7/18-21/48 7/9-21/96 21/9-21/48 7/9-63/48 7/27-21/48 35/9-21/48 7/45-21/48 49/9-21/48 7/63-21/48