Subtract 75/20 from 28/50
1st number: 28/50, 2nd number: 3 15/20
28/50 - 75/20 is -319/100.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 20 is 100
Next, find the equivalent fraction of both fractional numbers with denominator 100 - For the 1st fraction, since 50 × 2 = 100,
28/50 = 28 × 2/50 × 2 = 56/100 - Likewise, for the 2nd fraction, since 20 × 5 = 100,
75/20 = 75 × 5/20 × 5 = 375/100 - Subtract the two like fractions:
56/100 - 375/100 = 56 - 375/100 = -319/100
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/50-75/20 28/50-75/40 84/50-75/20 28/50-75/60