Subtract 2/54 from 28/45
28/45 - 2/54 is 79/135.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 45 × 6 = 270,
28/45 = 28 × 6/45 × 6 = 168/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
2/54 = 2 × 5/54 × 5 = 10/270 - Subtract the two like fractions:
168/270 - 10/270 = 168 - 10/270 = 158/270 - After reducing the fraction, the answer is 79/135
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/45-2/54 28/45-4/54 28/90-2/54 84/45-2/54 28/45-6/54 28/45-10/54 28/45-14/54