Subtract 2/30 from 21/50
21/50 - 2/30 is 53/150.
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,
2/30 = 2 × 5/30 × 5 = 10/150 - Subtract the two like fractions:
63/150 - 10/150 = 63 - 10/150 = 53/150
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/50-2/30 21/50-4/30 21/50-2/60 63/50-2/30 21/50-6/30 21/50-2/90 21/50-10/30 21/50-14/30