Subtract 2/48 from 21/18
1st number: 1 3/18, 2nd number: 2/48
21/18 - 2/48 is 9/8.
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,
21/18 = 21 × 8/18 × 8 = 168/144 - Likewise, for the 2nd fraction, since 48 × 3 = 144,
2/48 = 2 × 3/48 × 3 = 6/144 - Subtract the two like fractions:
168/144 - 6/144 = 168 - 6/144 = 162/144 - After reducing the fraction, the answer is 9/8
- In mixed form: 11/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/18-2/48 21/18-4/48 21/36-2/48 21/18-2/96 63/18-2/48 21/18-6/48 21/54-2/48 21/18-10/48 21/90-2/48 21/18-14/48