Subtract 21/60 from 1/2
1/2 - 21/60 is 3/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 60 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 2 × 30 = 60,
1/2 = 1 × 30/2 × 30 = 30/60 - Likewise, for the 2nd fraction, since 60 × 1 = 60,
21/60 = 21 × 1/60 × 1 = 21/60 - Subtract the two like fractions:
30/60 - 21/60 = 30 - 21/60 = 9/60 - After reducing the fraction, the answer is 3/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 1/2-42/60 1/4-21/60 3/2-21/60 1/2-63/60 1/6-21/60 5/2-21/60 1/10-21/60 7/2-21/60 1/14-21/60