Subtract 20/8 from 28/10
1st number: 2 8/10, 2nd number: 2 4/8
28/10 - 20/8 is 3/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 8 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 10 × 4 = 40,
28/10 = 28 × 4/10 × 4 = 112/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
20/8 = 20 × 5/8 × 5 = 100/40 - Subtract the two like fractions:
112/40 - 100/40 = 112 - 100/40 = 12/40 - After reducing the fraction, the answer is 3/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/10-20/8 28/10-40/8 28/20-20/8 28/10-20/16 84/10-20/8 28/10-60/8 28/30-20/8 28/10-20/24 28/50-20/8 28/10-20/40 28/70-20/8 28/10-20/56