Subtract 21/60 from 5/18
5/18 - 21/60 is -13/180.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 60 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 18 × 10 = 180,
5/18 = 5 × 10/18 × 10 = 50/180 - Likewise, for the 2nd fraction, since 60 × 3 = 180,
21/60 = 21 × 3/60 × 3 = 63/180 - Subtract the two like fractions:
50/180 - 63/180 = 50 - 63/180 = -13/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/18-21/60 5/18-42/60 5/36-21/60 15/18-21/60 5/18-63/60 5/54-21/60 25/18-21/60 5/90-21/60 35/18-21/60