Subtract 5/14 from 80/21
1st number: 3 17/21, 2nd number: 5/14
80/21 - 5/14 is 145/42.
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,
80/21 = 80 × 2/21 × 2 = 160/42 - Likewise, for the 2nd fraction, since 14 × 3 = 42,
5/14 = 5 × 3/14 × 3 = 15/42 - Subtract the two like fractions:
160/42 - 15/42 = 160 - 15/42 = 145/42 - In mixed form: 319/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/21-10/14 80/42-5/14 80/21-5/28 80/21-15/14 80/63-5/14 80/21-5/42 80/21-25/14 80/21-5/70 80/21-35/14 80/21-5/98