Subtract 49/30 from 21/9
1st number: 2 3/9, 2nd number: 1 19/30
21/9 - 49/30 is 7/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 30 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 9 × 10 = 90,
21/9 = 21 × 10/9 × 10 = 210/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
49/30 = 49 × 3/30 × 3 = 147/90 - Subtract the two like fractions:
210/90 - 147/90 = 210 - 147/90 = 63/90 - After reducing the fraction, the answer is 7/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/9-49/30 21/9-98/30 21/18-49/30 21/9-49/60 63/9-49/30 21/27-49/30 21/9-49/90 21/45-49/30 21/63-49/30