Subtract 27/20 from 28/8
1st number: 3 4/8, 2nd number: 1 7/20
28/8 - 27/20 is 43/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 20 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 8 × 5 = 40,
28/8 = 28 × 5/8 × 5 = 140/40 - Likewise, for the 2nd fraction, since 20 × 2 = 40,
27/20 = 27 × 2/20 × 2 = 54/40 - Subtract the two like fractions:
140/40 - 54/40 = 140 - 54/40 = 86/40 - After reducing the fraction, the answer is 43/20
- In mixed form: 23/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/8-27/20 28/8-54/20 28/16-27/20 28/8-27/40 84/8-27/20 28/8-81/20 28/24-27/20 28/8-27/60 28/40-27/20 28/56-27/20