Subtract 2/72 from 21/6
1st number: 3 3/6, 2nd number: 2/72
21/6 - 2/72 is 125/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 6 × 12 = 72,
21/6 = 21 × 12/6 × 12 = 252/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
2/72 = 2 × 1/72 × 1 = 2/72 - Subtract the two like fractions:
252/72 - 2/72 = 252 - 2/72 = 250/72 - After reducing the fraction, the answer is 125/36
- In mixed form: 317/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/6-2/72 21/6-4/72 21/12-2/72 63/6-2/72 21/6-6/72 21/18-2/72 21/6-10/72 21/30-2/72 21/6-14/72 21/42-2/72