Subtract 21/48 from 9/18
9/18 - 21/48 is 1/16.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 48 is 144
Next, find the equivalent fraction of both fractional numbers with denominator 144 - For the 1st fraction, since 18 × 8 = 144,
9/18 = 9 × 8/18 × 8 = 72/144 - Likewise, for the 2nd fraction, since 48 × 3 = 144,
21/48 = 21 × 3/48 × 3 = 63/144 - Subtract the two like fractions:
72/144 - 63/144 = 72 - 63/144 = 9/144 - After reducing the fraction, the answer is 1/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 9/18-42/48 9/36-21/48 9/18-21/96 27/18-21/48 9/18-63/48 9/54-21/48 45/18-21/48 9/90-21/48 63/18-21/48