Subtract 6/18 from 4/7
4/7 - 6/18 is 5/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 7 × 18 = 126,
4/7 = 4 × 18/7 × 18 = 72/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
6/18 = 6 × 7/18 × 7 = 42/126 - Subtract the two like fractions:
72/126 - 42/126 = 72 - 42/126 = 30/126 - After reducing the fraction, the answer is 5/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/7-6/18 4/7-12/18 4/14-6/18 4/7-6/36 12/7-6/18 4/21-6/18 4/7-6/54 20/7-6/18 4/7-30/18 4/35-6/18 4/7-6/90 28/7-6/18 4/7-42/18 4/49-6/18