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