Subtract 2/49 from 70/21
1st number: 3 7/21, 2nd number: 2/49
70/21 - 2/49 is 484/147.
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,
70/21 = 70 × 7/21 × 7 = 490/147 - Likewise, for the 2nd fraction, since 49 × 3 = 147,
2/49 = 2 × 3/49 × 3 = 6/147 - Subtract the two like fractions:
490/147 - 6/147 = 490 - 6/147 = 484/147 - In mixed form: 343/147
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/21-4/49 70/42-2/49 70/21-2/98 70/21-6/49 70/63-2/49 70/21-10/49 70/21-14/49