Subtract 12/49 from 35/21
1st number: 1 14/21, 2nd number: 12/49
35/21 - 12/49 is 209/147.
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,
35/21 = 35 × 7/21 × 7 = 245/147 - Likewise, for the 2nd fraction, since 49 × 3 = 147,
12/49 = 12 × 3/49 × 3 = 36/147 - Subtract the two like fractions:
245/147 - 36/147 = 245 - 36/147 = 209/147 - In mixed form: 162/147
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/21-12/49 35/21-24/49 35/42-12/49 35/21-12/98 35/21-36/49 35/63-12/49 35/21-60/49 35/21-84/49