Subtract 5/36 from 21/30
21/30 - 5/36 is 101/180.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 30 × 6 = 180,
21/30 = 21 × 6/30 × 6 = 126/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
5/36 = 5 × 5/36 × 5 = 25/180 - Subtract the two like fractions:
126/180 - 25/180 = 126 - 25/180 = 101/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/30-5/36 21/30-10/36 21/60-5/36 21/30-5/72 63/30-5/36 21/30-15/36 21/90-5/36 21/30-25/36 21/30-35/36