Subtract 21/9 from 4/36
1st number: 4/36, 2nd number: 2 3/9
4/36 - 21/9 is -20/9.
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,
4/36 = 4 × 1/36 × 1 = 4/36 - Likewise, for the 2nd fraction, since 9 × 4 = 36,
21/9 = 21 × 4/9 × 4 = 84/36 - Subtract the two like fractions:
4/36 - 84/36 = 4 - 84/36 = -80/36 - After reducing the fraction, the answer is -20/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/36-21/9 4/36-42/9 4/72-21/9 4/36-21/18 12/36-21/9 4/36-63/9 4/36-21/27 20/36-21/9 4/36-21/45 28/36-21/9 4/36-21/63