Subtract 6/48 from 21/54
21/54 - 6/48 is 19/72.
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,
6/48 = 6 × 9/48 × 9 = 54/432 - Subtract the two like fractions:
168/432 - 54/432 = 168 - 54/432 = 114/432 - After reducing the fraction, the answer is 19/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/54-6/48 21/54-12/48 21/54-6/96 63/54-6/48 21/54-18/48 21/54-30/48 21/54-42/48