Subtract 56/21 from 48/81
1st number: 48/81, 2nd number: 2 14/21
48/81 - 56/21 is -56/27.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 21 is 567
Next, find the equivalent fraction of both fractional numbers with denominator 567 - For the 1st fraction, since 81 × 7 = 567,
48/81 = 48 × 7/81 × 7 = 336/567 - Likewise, for the 2nd fraction, since 21 × 27 = 567,
56/21 = 56 × 27/21 × 27 = 1512/567 - Subtract the two like fractions:
336/567 - 1512/567 = 336 - 1512/567 = -1176/567 - After reducing the fraction, the answer is -56/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 96/81-56/21 48/81-56/42 48/81-56/63