Subtract 21/70 from 7/3
1st number: 2 1/3, 2nd number: 21/70
7/3 - 21/70 is 61/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 3 × 70 = 210,
7/3 = 7 × 70/3 × 70 = 490/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
21/70 = 21 × 3/70 × 3 = 63/210 - Subtract the two like fractions:
490/210 - 63/210 = 490 - 63/210 = 427/210 - After reducing the fraction, the answer is 61/30
- In mixed form: 21/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/3-21/70 7/3-42/70 7/6-21/70 21/3-21/70 7/3-63/70 7/9-21/70 35/3-21/70 7/15-21/70 49/3-21/70 7/21-21/70