Subtract 28/10 from 30/9
1st number: 3 3/9, 2nd number: 2 8/10
30/9 - 28/10 is 8/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 10 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 9 × 10 = 90,
30/9 = 30 × 10/9 × 10 = 300/90 - Likewise, for the 2nd fraction, since 10 × 9 = 90,
28/10 = 28 × 9/10 × 9 = 252/90 - Subtract the two like fractions:
300/90 - 252/90 = 300 - 252/90 = 48/90 - After reducing the fraction, the answer is 8/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/9-28/10 30/9-56/10 30/18-28/10 30/9-28/20 90/9-28/10 30/9-84/10 30/27-28/10 30/9-28/30 30/45-28/10 30/9-28/50 30/63-28/10 30/9-28/70