Subtract 56/48 from 7/21
1st number: 7/21, 2nd number: 1 8/48
7/21 - 56/48 is -5/6.
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,
7/21 = 7 × 16/21 × 16 = 112/336 - Likewise, for the 2nd fraction, since 48 × 7 = 336,
56/48 = 56 × 7/48 × 7 = 392/336 - Subtract the two like fractions:
112/336 - 392/336 = 112 - 392/336 = -280/336 - After reducing the fraction, the answer is -5/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/21-56/48 7/42-56/48 7/21-56/96 7/63-56/48 35/21-56/48 49/21-56/48