Subtract 27/21 from 45/14
1st number: 3 3/14, 2nd number: 1 6/21
45/14 - 27/21 is 27/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 14 × 3 = 42,
45/14 = 45 × 3/14 × 3 = 135/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
27/21 = 27 × 2/21 × 2 = 54/42 - Subtract the two like fractions:
135/42 - 54/42 = 135 - 54/42 = 81/42 - After reducing the fraction, the answer is 27/14
- In mixed form: 113/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/14-27/21 45/14-54/21 45/28-27/21 45/14-27/42 45/14-81/21 45/42-27/21 45/14-27/63 45/70-27/21 45/98-27/21