Subtract 21/80 from 28/6
1st number: 4 4/6, 2nd number: 21/80
28/6 - 21/80 is 1057/240.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 6 × 40 = 240,
28/6 = 28 × 40/6 × 40 = 1120/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
21/80 = 21 × 3/80 × 3 = 63/240 - Subtract the two like fractions:
1120/240 - 63/240 = 1120 - 63/240 = 1057/240 - In mixed form: 497/240
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/6-21/80 28/6-42/80 28/12-21/80 84/6-21/80 28/6-63/80 28/18-21/80 28/30-21/80 28/42-21/80