Subtract 10/9 from 20/15
1st number: 1 5/15, 2nd number: 1 1/9
20/15 - 10/9 is 2/9.
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,
20/15 = 20 × 3/15 × 3 = 60/45 - Likewise, for the 2nd fraction, since 9 × 5 = 45,
10/9 = 10 × 5/9 × 5 = 50/45 - Subtract the two like fractions:
60/45 - 50/45 = 60 - 50/45 = 10/45 - After reducing the fraction, the answer is 2/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/15-10/9 20/15-20/9 20/30-10/9 20/15-10/18 60/15-10/9 20/15-30/9 20/45-10/9 20/15-10/27 20/15-50/9 20/75-10/9 20/15-10/45 20/15-70/9 20/15-10/63