Subtract 28/80 from 8/15
8/15 - 28/80 is 11/60.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 15 × 16 = 240,
8/15 = 8 × 16/15 × 16 = 128/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
28/80 = 28 × 3/80 × 3 = 84/240 - Subtract the two like fractions:
128/240 - 84/240 = 128 - 84/240 = 44/240 - After reducing the fraction, the answer is 11/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/15-28/80 8/15-56/80 8/30-28/80 24/15-28/80 8/15-84/80 8/45-28/80 40/15-28/80 8/75-28/80 56/15-28/80