Subtract 35/30 from 14/21
1st number: 14/21, 2nd number: 1 5/30
14/21 - 35/30 is -1/2.
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,
35/30 = 35 × 7/30 × 7 = 245/210 - Subtract the two like fractions:
140/210 - 245/210 = 140 - 245/210 = -105/210 - After reducing the fraction, the answer is -1/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/21-35/30 14/21-70/30 14/42-35/30 14/21-35/60 42/21-35/30 14/63-35/30 14/21-35/90 70/21-35/30 98/21-35/30