Subtract 28/8 from 4/10
1st number: 4/10, 2nd number: 3 4/8
4/10 - 28/8 is -31/10.
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,
4/10 = 4 × 4/10 × 4 = 16/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
28/8 = 28 × 5/8 × 5 = 140/40 - Subtract the two like fractions:
16/40 - 140/40 = 16 - 140/40 = -124/40 - After reducing the fraction, the answer is -31/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/10-28/8 4/10-56/8 4/20-28/8 4/10-28/16 12/10-28/8 4/10-84/8 4/30-28/8 4/10-28/24 20/10-28/8 4/50-28/8 4/10-28/40 28/10-28/8 4/70-28/8 4/10-28/56