Subtract 27/50 from 21/15
1st number: 1 6/15, 2nd number: 27/50
21/15 - 27/50 is 43/50.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 50 is 150
Next, find the equivalent fraction of both fractional numbers with denominator 150 - For the 1st fraction, since 15 × 10 = 150,
21/15 = 21 × 10/15 × 10 = 210/150 - Likewise, for the 2nd fraction, since 50 × 3 = 150,
27/50 = 27 × 3/50 × 3 = 81/150 - Subtract the two like fractions:
210/150 - 81/150 = 210 - 81/150 = 129/150 - After reducing the fraction, the answer is 43/50
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/15-27/50 21/15-54/50 21/30-27/50 63/15-27/50 21/15-81/50 21/45-27/50 21/75-27/50