Subtract 28/20 from 25/50
1st number: 25/50, 2nd number: 1 8/20
25/50 - 28/20 is -9/10.
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,
25/50 = 25 × 2/50 × 2 = 50/100 - Likewise, for the 2nd fraction, since 20 × 5 = 100,
28/20 = 28 × 5/20 × 5 = 140/100 - Subtract the two like fractions:
50/100 - 140/100 = 50 - 140/100 = -90/100 - After reducing the fraction, the answer is -9/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 25/50-56/20 25/50-28/40 75/50-28/20 25/50-84/20 25/50-28/60