Subtract 12/4 from 48/21
1st number: 2 6/21, 2nd number: 3 0/4
48/21 - 12/4 is -5/7.
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,
12/4 = 12 × 21/4 × 21 = 252/84 - Subtract the two like fractions:
192/84 - 252/84 = 192 - 252/84 = -60/84 - After reducing the fraction, the answer is -5/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 96/21-12/4 48/21-24/4 48/42-12/4 48/21-12/8 48/21-36/4 48/63-12/4 48/21-60/4 48/21-12/20 48/21-84/4 48/21-12/28