Subtract 6/49 from 9/21
9/21 - 6/49 is 15/49.
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,
9/21 = 9 × 7/21 × 7 = 63/147 - Likewise, for the 2nd fraction, since 49 × 3 = 147,
6/49 = 6 × 3/49 × 3 = 18/147 - Subtract the two like fractions:
63/147 - 18/147 = 63 - 18/147 = 45/147 - After reducing the fraction, the answer is 15/49
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/21-6/49 9/21-12/49 9/42-6/49 9/21-6/98 27/21-6/49 9/21-18/49 9/63-6/49 45/21-6/49 9/21-30/49 63/21-6/49 9/21-42/49