Subtract 49/21 from 9/8
1st number: 1 1/8, 2nd number: 2 7/21
9/8 - 49/21 is -29/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 8 × 21 = 168,
9/8 = 9 × 21/8 × 21 = 189/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
49/21 = 49 × 8/21 × 8 = 392/168 - Subtract the two like fractions:
189/168 - 392/168 = 189 - 392/168 = -203/168 - After reducing the fraction, the answer is -29/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/8-49/21 9/8-98/21 9/16-49/21 9/8-49/42 27/8-49/21 9/24-49/21 9/8-49/63 45/8-49/21 9/40-49/21 63/8-49/21 9/56-49/21