Subtract 7/70 from 56/21
1st number: 2 14/21, 2nd number: 7/70
56/21 - 7/70 is 77/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
56/21 = 56 × 10/21 × 10 = 560/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
7/70 = 7 × 3/70 × 3 = 21/210 - Subtract the two like fractions:
560/210 - 21/210 = 560 - 21/210 = 539/210 - After reducing the fraction, the answer is 77/30
- In mixed form: 217/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/21-14/70 56/42-7/70 56/21-21/70 56/63-7/70 56/21-35/70 56/21-49/70