Subtract 15/9 from 20/36
1st number: 20/36, 2nd number: 1 6/9
20/36 - 15/9 is -10/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 9 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 36 × 1 = 36,
20/36 = 20 × 1/36 × 1 = 20/36 - Likewise, for the 2nd fraction, since 9 × 4 = 36,
15/9 = 15 × 4/9 × 4 = 60/36 - Subtract the two like fractions:
20/36 - 60/36 = 20 - 60/36 = -40/36 - After reducing the fraction, the answer is -10/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/36-15/9 20/36-30/9 20/72-15/9 20/36-15/18 60/36-15/9 20/36-45/9 20/36-15/27 20/36-75/9 20/36-15/45 20/36-15/63