Subtract 5/30 from 21/50
21/50 - 5/30 is 19/75.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 30 is 150
Next, find the equivalent fraction of both fractional numbers with denominator 150 - For the 1st fraction, since 50 × 3 = 150,
21/50 = 21 × 3/50 × 3 = 63/150 - Likewise, for the 2nd fraction, since 30 × 5 = 150,
5/30 = 5 × 5/30 × 5 = 25/150 - Subtract the two like fractions:
63/150 - 25/150 = 63 - 25/150 = 38/150 - After reducing the fraction, the answer is 19/75
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/50-5/30 21/50-10/30 21/50-5/60 63/50-5/30 21/50-15/30 21/50-5/90 21/50-25/30 21/50-35/30