Subtract 15/4 from 48/21
1st number: 2 6/21, 2nd number: 3 3/4
48/21 - 15/4 is -41/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 4 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
48/21 = 48 × 4/21 × 4 = 192/84 - Likewise, for the 2nd fraction, since 4 × 21 = 84,
15/4 = 15 × 21/4 × 21 = 315/84 - Subtract the two like fractions:
192/84 - 315/84 = 192 - 315/84 = -123/84 - After reducing the fraction, the answer is -41/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 96/21-15/4 48/21-30/4 48/42-15/4 48/21-15/8 48/21-45/4 48/63-15/4 48/21-15/12 48/21-75/4 48/21-15/20 48/21-15/28