Subtract 21/10 from 45/14
1st number: 3 3/14, 2nd number: 2 1/10
45/14 - 21/10 is 39/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 10 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 14 × 5 = 70,
45/14 = 45 × 5/14 × 5 = 225/70 - Likewise, for the 2nd fraction, since 10 × 7 = 70,
21/10 = 21 × 7/10 × 7 = 147/70 - Subtract the two like fractions:
225/70 - 147/70 = 225 - 147/70 = 78/70 - After reducing the fraction, the answer is 39/35
- In mixed form: 14/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/14-21/10 45/14-42/10 45/28-21/10 45/14-21/20 45/14-63/10 45/42-21/10 45/14-21/30 45/70-21/10 45/14-21/50 45/98-21/10 45/14-21/70