Subtract 40/8 from 28/4
1st number: 7 0/4, 2nd number: 5 0/8
28/4 - 40/8 is 2/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 8 is 8
Next, find the equivalent fraction of both fractional numbers with denominator 8 - For the 1st fraction, since 4 × 2 = 8,
28/4 = 28 × 2/4 × 2 = 56/8 - Likewise, for the 2nd fraction, since 8 × 1 = 8,
40/8 = 40 × 1/8 × 1 = 40/8 - Subtract the two like fractions:
56/8 - 40/8 = 56 - 40/8 = 16/8 - After reducing the fraction, the answer is 2/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/4-40/8 28/4-80/8 28/8-40/8 28/4-40/16 84/4-40/8 28/12-40/8 28/4-40/24 28/20-40/8 28/4-40/56