Subtract 8/30 from 14/21
14/21 - 8/30 is 2/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
14/21 = 14 × 10/21 × 10 = 140/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
8/30 = 8 × 7/30 × 7 = 56/210 - Subtract the two like fractions:
140/210 - 56/210 = 140 - 56/210 = 84/210 - After reducing the fraction, the answer is 2/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/21-8/30 14/21-16/30 14/42-8/30 14/21-8/60 42/21-8/30 14/21-24/30 14/63-8/30 14/21-8/90 70/21-8/30 14/21-40/30 98/21-8/30 14/21-56/30