Subtract 25/8 from 21/48
1st number: 21/48, 2nd number: 3 1/8
21/48 - 25/8 is -43/16.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 8 is 48
Next, find the equivalent fraction of both fractional numbers with denominator 48 - For the 1st fraction, since 48 × 1 = 48,
21/48 = 21 × 1/48 × 1 = 21/48 - Likewise, for the 2nd fraction, since 8 × 6 = 48,
25/8 = 25 × 6/8 × 6 = 150/48 - Subtract the two like fractions:
21/48 - 150/48 = 21 - 150/48 = -129/48 - After reducing the fraction, the answer is -43/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/48-25/8 21/48-50/8 21/96-25/8 21/48-25/16 63/48-25/8 21/48-75/8 21/48-25/24 21/48-25/40 21/48-25/56