Subtract 28/15 from 3/80
1st number: 3/80, 2nd number: 1 13/15
3/80 - 28/15 is -439/240.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 15 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 80 × 3 = 240,
3/80 = 3 × 3/80 × 3 = 9/240 - Likewise, for the 2nd fraction, since 15 × 16 = 240,
28/15 = 28 × 16/15 × 16 = 448/240 - Subtract the two like fractions:
9/240 - 448/240 = 9 - 448/240 = -439/240
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/80-28/15 3/80-56/15 3/80-28/30 9/80-28/15 3/80-84/15 3/80-28/45 15/80-28/15 3/80-28/75 21/80-28/15