Subtract 1/48 from 21/54
21/54 - 1/48 is 53/144.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 48 is 432
Next, find the equivalent fraction of both fractional numbers with denominator 432 - For the 1st fraction, since 54 × 8 = 432,
21/54 = 21 × 8/54 × 8 = 168/432 - Likewise, for the 2nd fraction, since 48 × 9 = 432,
1/48 = 1 × 9/48 × 9 = 9/432 - Subtract the two like fractions:
168/432 - 9/432 = 168 - 9/432 = 159/432 - After reducing the fraction, the answer is 53/144
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/54-1/48 21/54-2/48 21/54-1/96 63/54-1/48 21/54-3/48 21/54-5/48 21/54-7/48