Subtract 14/80 from 21/4
1st number: 5 1/4, 2nd number: 14/80
21/4 - 14/80 is 203/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 4 × 20 = 80,
21/4 = 21 × 20/4 × 20 = 420/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
14/80 = 14 × 1/80 × 1 = 14/80 - Subtract the two like fractions:
420/80 - 14/80 = 420 - 14/80 = 406/80 - After reducing the fraction, the answer is 203/40
- In mixed form: 53/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/4-14/80 21/4-28/80 21/8-14/80 63/4-14/80 21/4-42/80 21/12-14/80 21/4-70/80 21/20-14/80 21/4-98/80 21/28-14/80