Subtract 14/21 from 4/18
4/18 - 14/21 is -4/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 21 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
4/18 = 4 × 7/18 × 7 = 28/126 - Likewise, for the 2nd fraction, since 21 × 6 = 126,
14/21 = 14 × 6/21 × 6 = 84/126 - Subtract the two like fractions:
28/126 - 84/126 = 28 - 84/126 = -56/126 - After reducing the fraction, the answer is -4/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/18-14/21 4/18-28/21 4/36-14/21 4/18-14/42 12/18-14/21 4/18-42/21 4/54-14/21 4/18-14/63 20/18-14/21 4/18-70/21 4/90-14/21 28/18-14/21 4/18-98/21