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