Subtract 21/4 from 36/3
1st number: 12 0/3, 2nd number: 5 1/4
36/3 - 21/4 is 27/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 4 is 12
Next, find the equivalent fraction of both fractional numbers with denominator 12 - For the 1st fraction, since 3 × 4 = 12,
36/3 = 36 × 4/3 × 4 = 144/12 - Likewise, for the 2nd fraction, since 4 × 3 = 12,
21/4 = 21 × 3/4 × 3 = 63/12 - Subtract the two like fractions:
144/12 - 63/12 = 144 - 63/12 = 81/12 - After reducing the fraction, the answer is 27/4
- In mixed form: 63/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/3-21/4 36/3-42/4 36/6-21/4 36/3-21/8 36/3-63/4 36/9-21/4 36/3-21/12 36/15-21/4 36/3-21/20 36/21-21/4 36/3-21/28