Subtract 21/8 from 48/28
1st number: 1 20/28, 2nd number: 2 5/8
48/28 - 21/8 is -51/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 8 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 28 × 2 = 56,
48/28 = 48 × 2/28 × 2 = 96/56 - Likewise, for the 2nd fraction, since 8 × 7 = 56,
21/8 = 21 × 7/8 × 7 = 147/56 - Subtract the two like fractions:
96/56 - 147/56 = 96 - 147/56 = -51/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 96/28-21/8 48/28-42/8 48/56-21/8 48/28-21/16 48/28-63/8 48/84-21/8 48/28-21/24 48/28-21/40 48/28-21/56