Subtract 28/50 from 15/20
15/20 - 28/50 is 19/100.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 50 is 100
Next, find the equivalent fraction of both fractional numbers with denominator 100 - For the 1st fraction, since 20 × 5 = 100,
15/20 = 15 × 5/20 × 5 = 75/100 - Likewise, for the 2nd fraction, since 50 × 2 = 100,
28/50 = 28 × 2/50 × 2 = 56/100 - Subtract the two like fractions:
75/100 - 56/100 = 75 - 56/100 = 19/100
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/20-28/50 15/20-56/50 15/40-28/50 45/20-28/50 15/20-84/50 15/60-28/50 75/20-28/50