Subtract 12/9 from 27/15
1st number: 1 12/15, 2nd number: 1 3/9
27/15 - 12/9 is 7/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 9 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 15 × 3 = 45,
27/15 = 27 × 3/15 × 3 = 81/45 - Likewise, for the 2nd fraction, since 9 × 5 = 45,
12/9 = 12 × 5/9 × 5 = 60/45 - Subtract the two like fractions:
81/45 - 60/45 = 81 - 60/45 = 21/45 - After reducing the fraction, the answer is 7/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/15-12/9 27/15-24/9 27/30-12/9 27/15-12/18 81/15-12/9 27/15-36/9 27/45-12/9 27/15-12/27 27/15-60/9 27/75-12/9 27/15-12/45 27/15-84/9 27/15-12/63