Subtract 4/21 from 49/18
1st number: 2 13/18, 2nd number: 4/21
49/18 - 4/21 is 319/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 21 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
49/18 = 49 × 7/18 × 7 = 343/126 - Likewise, for the 2nd fraction, since 21 × 6 = 126,
4/21 = 4 × 6/21 × 6 = 24/126 - Subtract the two like fractions:
343/126 - 24/126 = 343 - 24/126 = 319/126 - In mixed form: 267/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/18-4/21 49/18-8/21 49/36-4/21 49/18-4/42 49/18-12/21 49/54-4/21 49/18-4/63 49/18-20/21 49/90-4/21 49/18-28/21