Subtract 48/21 from 48/12
1st number: 4 0/12, 2nd number: 2 6/21
48/12 - 48/21 is 12/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
48/12 = 48 × 7/12 × 7 = 336/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
48/21 = 48 × 4/21 × 4 = 192/84 - Subtract the two like fractions:
336/84 - 192/84 = 336 - 192/84 = 144/84 - After reducing the fraction, the answer is 12/7
- In mixed form: 15/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 96/12-48/21 48/12-96/21 48/24-48/21 48/12-48/42 48/36-48/21 48/12-48/63 48/60-48/21 48/84-48/21