Subtract 15/9 from 2/20
1st number: 2/20, 2nd number: 1 6/9
2/20 - 15/9 is -47/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 9 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
2/20 = 2 × 9/20 × 9 = 18/180 - Likewise, for the 2nd fraction, since 9 × 20 = 180,
15/9 = 15 × 20/9 × 20 = 300/180 - Subtract the two like fractions:
18/180 - 300/180 = 18 - 300/180 = -282/180 - After reducing the fraction, the answer is -47/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/20-15/9 2/20-30/9 2/40-15/9 2/20-15/18 6/20-15/9 2/20-45/9 2/60-15/9 2/20-15/27 10/20-15/9 2/20-75/9 2/20-15/45 14/20-15/9 2/20-15/63