Subtract 28/54 from 8/15
8/15 - 28/54 is 2/135.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 15 × 18 = 270,
8/15 = 8 × 18/15 × 18 = 144/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
28/54 = 28 × 5/54 × 5 = 140/270 - Subtract the two like fractions:
144/270 - 140/270 = 144 - 140/270 = 4/270 - After reducing the fraction, the answer is 2/135
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/15-28/54 8/15-56/54 8/30-28/54 24/15-28/54 8/15-84/54 8/45-28/54 40/15-28/54 8/75-28/54 56/15-28/54