Subtract 49/21 from 49/12
1st number: 4 1/12, 2nd number: 2 7/21
49/12 - 49/21 is 7/4.
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,
49/12 = 49 × 7/12 × 7 = 343/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
49/21 = 49 × 4/21 × 4 = 196/84 - Subtract the two like fractions:
343/84 - 196/84 = 343 - 196/84 = 147/84 - After reducing the fraction, the answer is 7/4
- In mixed form: 13/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/12-49/21 49/12-98/21 49/24-49/21 49/12-49/42 49/36-49/21 49/12-49/63 49/60-49/21 49/84-49/21