Subtract 7/12 from 36/21
1st number: 1 15/21, 2nd number: 7/12
36/21 - 7/12 is 95/84.
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,
7/12 = 7 × 7/12 × 7 = 49/84 - Subtract the two like fractions:
144/84 - 49/84 = 144 - 49/84 = 95/84 - In mixed form: 111/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/21-7/12 36/21-14/12 36/42-7/12 36/21-7/24 36/21-21/12 36/63-7/12 36/21-7/36 36/21-35/12 36/21-7/60 36/21-49/12 36/21-7/84