Subtract 28/45 from 8/15
8/15 - 28/45 is -4/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 45 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 15 × 3 = 45,
8/15 = 8 × 3/15 × 3 = 24/45 - Likewise, for the 2nd fraction, since 45 × 1 = 45,
28/45 = 28 × 1/45 × 1 = 28/45 - Subtract the two like fractions:
24/45 - 28/45 = 24 - 28/45 = -4/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/15-28/45 8/15-56/45 8/30-28/45 8/15-28/90 24/15-28/45 8/15-84/45 8/45-28/45 40/15-28/45 8/75-28/45 56/15-28/45