Subtract 1/9 from 49/21
1st number: 2 7/21, 2nd number: 1/9
49/21 - 1/9 is 20/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 9 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 21 × 3 = 63,
49/21 = 49 × 3/21 × 3 = 147/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
1/9 = 1 × 7/9 × 7 = 7/63 - Subtract the two like fractions:
147/63 - 7/63 = 147 - 7/63 = 140/63 - After reducing the fraction, the answer is 20/9
- In mixed form: 22/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/21-1/9 49/21-2/9 49/42-1/9 49/21-1/18 49/21-3/9 49/63-1/9 49/21-1/27 49/21-5/9 49/21-1/45 49/21-7/9 49/21-1/63