Subtract 15/8 from 27/9
1st number: 3 0/9, 2nd number: 1 7/8
27/9 - 15/8 is 9/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 8 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 9 × 8 = 72,
27/9 = 27 × 8/9 × 8 = 216/72 - Likewise, for the 2nd fraction, since 8 × 9 = 72,
15/8 = 15 × 9/8 × 9 = 135/72 - Subtract the two like fractions:
216/72 - 135/72 = 216 - 135/72 = 81/72 - After reducing the fraction, the answer is 9/8
- In mixed form: 11/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/9-15/8 27/9-30/8 27/18-15/8 27/9-15/16 81/9-15/8 27/9-45/8 27/9-15/24 27/9-75/8 27/45-15/8 27/9-15/40 27/63-15/8 27/9-15/56