Subtract 80/21 from 1/6
1st number: 1/6, 2nd number: 3 17/21
1/6 - 80/21 is -51/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 6 × 7 = 42,
1/6 = 1 × 7/6 × 7 = 7/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
80/21 = 80 × 2/21 × 2 = 160/42 - Subtract the two like fractions:
7/42 - 160/42 = 7 - 160/42 = -153/42 - After reducing the fraction, the answer is -51/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/6-80/21 1/12-80/21 1/6-80/42 3/6-80/21 1/18-80/21 1/6-80/63 5/6-80/21 1/30-80/21 7/6-80/21 1/42-80/21