Subtract 1/10 from 70/21
1st number: 3 7/21, 2nd number: 1/10
70/21 - 1/10 is 97/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 10 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
70/21 = 70 × 10/21 × 10 = 700/210 - Likewise, for the 2nd fraction, since 10 × 21 = 210,
1/10 = 1 × 21/10 × 21 = 21/210 - Subtract the two like fractions:
700/210 - 21/210 = 700 - 21/210 = 679/210 - After reducing the fraction, the answer is 97/30
- In mixed form: 37/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/21-2/10 70/42-1/10 70/21-1/20 70/21-3/10 70/63-1/10 70/21-1/30 70/21-5/10 70/21-1/50 70/21-7/10 70/21-1/70