Subtract 28/8 from 5/18
1st number: 5/18, 2nd number: 3 4/8
5/18 - 28/8 is -29/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 8 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 18 × 4 = 72,
5/18 = 5 × 4/18 × 4 = 20/72 - Likewise, for the 2nd fraction, since 8 × 9 = 72,
28/8 = 28 × 9/8 × 9 = 252/72 - Subtract the two like fractions:
20/72 - 252/72 = 20 - 252/72 = -232/72 - After reducing the fraction, the answer is -29/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/18-28/8 5/18-56/8 5/36-28/8 5/18-28/16 15/18-28/8 5/18-84/8 5/54-28/8 5/18-28/24 25/18-28/8 5/90-28/8 5/18-28/40 35/18-28/8 5/18-28/56