Subtract 21/36 from 3/2
1st number: 1 1/2, 2nd number: 21/36
3/2 - 21/36 is 11/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 36 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 2 × 18 = 36,
3/2 = 3 × 18/2 × 18 = 54/36 - Likewise, for the 2nd fraction, since 36 × 1 = 36,
21/36 = 21 × 1/36 × 1 = 21/36 - Subtract the two like fractions:
54/36 - 21/36 = 54 - 21/36 = 33/36 - After reducing the fraction, the answer is 11/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/2-21/36 3/2-42/36 3/4-21/36 3/2-21/72 9/2-21/36 3/2-63/36 3/6-21/36 15/2-21/36 3/10-21/36 21/2-21/36 3/14-21/36