Subtract 20/8 from 2/18
1st number: 2/18, 2nd number: 2 4/8
2/18 - 20/8 is -43/18.
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,
2/18 = 2 × 4/18 × 4 = 8/72 - Likewise, for the 2nd fraction, since 8 × 9 = 72,
20/8 = 20 × 9/8 × 9 = 180/72 - Subtract the two like fractions:
8/72 - 180/72 = 8 - 180/72 = -172/72 - After reducing the fraction, the answer is -43/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/18-20/8 2/18-40/8 2/36-20/8 2/18-20/16 6/18-20/8 2/18-60/8 2/54-20/8 2/18-20/24 10/18-20/8 2/90-20/8 2/18-20/40 14/18-20/8 2/18-20/56