Subtract 12/36 from 21/3
1st number: 7 0/3, 2nd number: 12/36
21/3 - 12/36 is 20/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 36 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 3 × 12 = 36,
21/3 = 21 × 12/3 × 12 = 252/36 - Likewise, for the 2nd fraction, since 36 × 1 = 36,
12/36 = 12 × 1/36 × 1 = 12/36 - Subtract the two like fractions:
252/36 - 12/36 = 252 - 12/36 = 240/36 - After reducing the fraction, the answer is 20/3
- In mixed form: 62/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/3-12/36 21/3-24/36 21/6-12/36 21/3-12/72 63/3-12/36 21/9-12/36 21/3-60/36 21/15-12/36 21/3-84/36