Subtract 9/14 from 40/21
1st number: 1 19/21, 2nd number: 9/14
40/21 - 9/14 is 53/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 14 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 21 × 2 = 42,
40/21 = 40 × 2/21 × 2 = 80/42 - Likewise, for the 2nd fraction, since 14 × 3 = 42,
9/14 = 9 × 3/14 × 3 = 27/42 - Subtract the two like fractions:
80/42 - 27/42 = 80 - 27/42 = 53/42 - In mixed form: 111/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/21-9/14 40/21-18/14 40/42-9/14 40/21-9/28 40/21-27/14 40/63-9/14 40/21-9/42 40/21-45/14 40/21-9/70 40/21-63/14 40/21-9/98