Subtract 15/8 from 48/21
1st number: 2 6/21, 2nd number: 1 7/8
48/21 - 15/8 is 23/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 8 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
48/21 = 48 × 8/21 × 8 = 384/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
15/8 = 15 × 21/8 × 21 = 315/168 - Subtract the two like fractions:
384/168 - 315/168 = 384 - 315/168 = 69/168 - After reducing the fraction, the answer is 23/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 96/21-15/8 48/21-30/8 48/42-15/8 48/21-15/16 48/21-45/8 48/63-15/8 48/21-15/24 48/21-75/8 48/21-15/40 48/21-15/56