Subtract 2/21 from 14/18
14/18 - 2/21 is 43/63.
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,
14/18 = 14 × 7/18 × 7 = 98/126 - Likewise, for the 2nd fraction, since 21 × 6 = 126,
2/21 = 2 × 6/21 × 6 = 12/126 - Subtract the two like fractions:
98/126 - 12/126 = 98 - 12/126 = 86/126 - After reducing the fraction, the answer is 43/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/18-2/21 14/18-4/21 14/36-2/21 14/18-2/42 42/18-2/21 14/18-6/21 14/54-2/21 14/18-2/63 70/18-2/21 14/18-10/21 14/90-2/21 98/18-2/21 14/18-14/21