Subtract 20/15 from 15/50
1st number: 15/50, 2nd number: 1 5/15
15/50 - 20/15 is -31/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 15 is 150
Next, find the equivalent fraction of both fractional numbers with denominator 150 - For the 1st fraction, since 50 × 3 = 150,
15/50 = 15 × 3/50 × 3 = 45/150 - Likewise, for the 2nd fraction, since 15 × 10 = 150,
20/15 = 20 × 10/15 × 10 = 200/150 - Subtract the two like fractions:
45/150 - 200/150 = 45 - 200/150 = -155/150 - After reducing the fraction, the answer is -31/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/50-20/15 15/50-40/15 15/50-20/30 45/50-20/15 15/50-60/15 15/50-20/45 75/50-20/15 15/50-20/75