Subtract 27/9 from 28/10
1st number: 2 8/10, 2nd number: 3 0/9
28/10 - 27/9 is -1/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 9 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 10 × 9 = 90,
28/10 = 28 × 9/10 × 9 = 252/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
27/9 = 27 × 10/9 × 10 = 270/90 - Subtract the two like fractions:
252/90 - 270/90 = 252 - 270/90 = -18/90 - After reducing the fraction, the answer is -1/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/10-27/9 28/10-54/9 28/20-27/9 28/10-27/18 84/10-27/9 28/10-81/9 28/30-27/9 28/50-27/9 28/10-27/45 28/70-27/9 28/10-27/63