Subtract 2/8 from 28/40
28/40 - 2/8 is 9/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 8 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
28/40 = 28 × 1/40 × 1 = 28/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
2/8 = 2 × 5/8 × 5 = 10/40 - Subtract the two like fractions:
28/40 - 10/40 = 28 - 10/40 = 18/40 - After reducing the fraction, the answer is 9/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/40-2/8 28/40-4/8 28/80-2/8 28/40-2/16 84/40-2/8 28/40-6/8 28/40-2/24 28/40-10/8 28/40-2/40 28/40-14/8 28/40-2/56