Subtract 14/49 from 10/21
10/21 - 14/49 is 4/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 49 is 147
Next, find the equivalent fraction of both fractional numbers with denominator 147 - For the 1st fraction, since 21 × 7 = 147,
10/21 = 10 × 7/21 × 7 = 70/147 - Likewise, for the 2nd fraction, since 49 × 3 = 147,
14/49 = 14 × 3/49 × 3 = 42/147 - Subtract the two like fractions:
70/147 - 42/147 = 70 - 42/147 = 28/147 - After reducing the fraction, the answer is 4/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/21-14/49 10/21-28/49 10/42-14/49 10/21-14/98 30/21-14/49 10/21-42/49 10/63-14/49 50/21-14/49 10/21-70/49 70/21-14/49 10/21-98/49