Subtract 80/21 from 56/3
1st number: 18 2/3, 2nd number: 3 17/21
56/3 - 80/21 is 104/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 21 is 21
Next, find the equivalent fraction of both fractional numbers with denominator 21 - For the 1st fraction, since 3 × 7 = 21,
56/3 = 56 × 7/3 × 7 = 392/21 - Likewise, for the 2nd fraction, since 21 × 1 = 21,
80/21 = 80 × 1/21 × 1 = 80/21 - Subtract the two like fractions:
392/21 - 80/21 = 392 - 80/21 = 312/21 - After reducing the fraction, the answer is 104/7
- In mixed form: 146/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/6-80/21 56/3-80/42 56/9-80/21 56/3-80/63 56/15-80/21 56/21-80/21