Subtract 2/15 from 20/18
1st number: 1 2/18, 2nd number: 2/15
20/18 - 2/15 is 44/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 15 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
20/18 = 20 × 5/18 × 5 = 100/90 - Likewise, for the 2nd fraction, since 15 × 6 = 90,
2/15 = 2 × 6/15 × 6 = 12/90 - Subtract the two like fractions:
100/90 - 12/90 = 100 - 12/90 = 88/90 - After reducing the fraction, the answer is 44/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/18-2/15 20/18-4/15 20/36-2/15 20/18-2/30 60/18-2/15 20/18-6/15 20/54-2/15 20/18-2/45 20/18-10/15 20/90-2/15 20/18-2/75 20/18-14/15