Subtract 6/8 from 20/18
1st number: 1 2/18, 2nd number: 6/8
20/18 - 6/8 is 13/36.
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,
20/18 = 20 × 4/18 × 4 = 80/72 - Likewise, for the 2nd fraction, since 8 × 9 = 72,
6/8 = 6 × 9/8 × 9 = 54/72 - Subtract the two like fractions:
80/72 - 54/72 = 80 - 54/72 = 26/72 - After reducing the fraction, the answer is 13/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/18-6/8 20/18-12/8 20/36-6/8 20/18-6/16 60/18-6/8 20/18-18/8 20/54-6/8 20/18-6/24 20/18-30/8 20/90-6/8 20/18-6/40 20/18-42/8 20/18-6/56