Subtract 21/12 from 2/72
1st number: 2/72, 2nd number: 1 9/12
2/72 - 21/12 is -31/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 12 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
2/72 = 2 × 1/72 × 1 = 2/72 - Likewise, for the 2nd fraction, since 12 × 6 = 72,
21/12 = 21 × 6/12 × 6 = 126/72 - Subtract the two like fractions:
2/72 - 126/72 = 2 - 126/72 = -124/72 - After reducing the fraction, the answer is -31/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/72-21/12 2/72-42/12 2/72-21/24 6/72-21/12 2/72-63/12 2/72-21/36 10/72-21/12 2/72-21/60 14/72-21/12 2/72-21/84