Subtract 49/80 from 84/21
1st number: 4 0/21, 2nd number: 49/80
84/21 - 49/80 is 271/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 80 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 21 × 80 = 1680,
84/21 = 84 × 80/21 × 80 = 6720/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
49/80 = 49 × 21/80 × 21 = 1029/1680 - Subtract the two like fractions:
6720/1680 - 1029/1680 = 6720 - 1029/1680 = 5691/1680 - After reducing the fraction, the answer is 271/80
- In mixed form: 331/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/21-98/80 84/42-49/80 84/63-49/80