Subtract 75/49 from 6/21
1st number: 6/21, 2nd number: 1 26/49
6/21 - 75/49 is -61/49.
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,
6/21 = 6 × 7/21 × 7 = 42/147 - Likewise, for the 2nd fraction, since 49 × 3 = 147,
75/49 = 75 × 3/49 × 3 = 225/147 - Subtract the two like fractions:
42/147 - 225/147 = 42 - 225/147 = -183/147 - After reducing the fraction, the answer is -61/49
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/21-75/49 6/42-75/49 6/21-75/98 18/21-75/49 6/63-75/49 30/21-75/49 42/21-75/49