Subtract 27/48 from 15/21
15/21 - 27/48 is 17/112.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 48 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 21 × 16 = 336,
15/21 = 15 × 16/21 × 16 = 240/336 - Likewise, for the 2nd fraction, since 48 × 7 = 336,
27/48 = 27 × 7/48 × 7 = 189/336 - Subtract the two like fractions:
240/336 - 189/336 = 240 - 189/336 = 51/336 - After reducing the fraction, the answer is 17/112
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/21-27/48 15/21-54/48 15/42-27/48 15/21-27/96 45/21-27/48 15/21-81/48 15/63-27/48 75/21-27/48