Subtract 63/48 from 21/27
1st number: 21/27, 2nd number: 1 15/48
21/27 - 63/48 is -77/144.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 48 is 432
Next, find the equivalent fraction of both fractional numbers with denominator 432 - For the 1st fraction, since 27 × 16 = 432,
21/27 = 21 × 16/27 × 16 = 336/432 - Likewise, for the 2nd fraction, since 48 × 9 = 432,
63/48 = 63 × 9/48 × 9 = 567/432 - Subtract the two like fractions:
336/432 - 567/432 = 336 - 567/432 = -231/432 - After reducing the fraction, the answer is -77/144
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/27-63/48 21/54-63/48 21/27-63/96 63/27-63/48 21/81-63/48