Subtract 6/18 from 49/21
1st number: 2 7/21, 2nd number: 6/18
49/21 - 6/18 is 2/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 21 × 6 = 126,
49/21 = 49 × 6/21 × 6 = 294/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
6/18 = 6 × 7/18 × 7 = 42/126 - Subtract the two like fractions:
294/126 - 42/126 = 294 - 42/126 = 252/126 - After reducing the fraction, the answer is 2/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/21-6/18 49/21-12/18 49/42-6/18 49/21-6/36 49/63-6/18 49/21-6/54 49/21-30/18 49/21-6/90 49/21-42/18