Subtract 21/12 from 35/20
1st number: 1 15/20, 2nd number: 1 9/12
35/20 - 21/12 is 0/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
35/20 = 35 × 3/20 × 3 = 105/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
21/12 = 21 × 5/12 × 5 = 105/60 - Subtract the two like fractions:
105/60 - 105/60 = 105 - 105/60 = 0/60 - The answer is 0
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/20-21/12 35/20-42/12 35/40-21/12 35/20-21/24 35/20-63/12 35/60-21/12 35/20-21/36 35/20-21/60 35/20-21/84