Subtract 6/49 from 10/21
10/21 - 6/49 is 52/147.
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,
6/49 = 6 × 3/49 × 3 = 18/147 - Subtract the two like fractions:
70/147 - 18/147 = 70 - 18/147 = 52/147
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/21-6/49 10/21-12/49 10/42-6/49 10/21-6/98 30/21-6/49 10/21-18/49 10/63-6/49 50/21-6/49 10/21-30/49 70/21-6/49 10/21-42/49