Subtract 35/12 from 36/21
1st number: 1 15/21, 2nd number: 2 11/12
36/21 - 35/12 is -101/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
36/21 = 36 × 4/21 × 4 = 144/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
35/12 = 35 × 7/12 × 7 = 245/84 - Subtract the two like fractions:
144/84 - 245/84 = 144 - 245/84 = -101/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/21-35/12 36/21-70/12 36/42-35/12 36/21-35/24 36/63-35/12 36/21-35/36 36/21-35/60 36/21-35/84