Subtract 4/45 from 27/28
27/28 - 4/45 is 1103/1260.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 45 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 28 × 45 = 1260,
27/28 = 27 × 45/28 × 45 = 1215/1260 - Likewise, for the 2nd fraction, since 45 × 28 = 1260,
4/45 = 4 × 28/45 × 28 = 112/1260 - Subtract the two like fractions:
1215/1260 - 112/1260 = 1215 - 112/1260 = 1103/1260
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/28-4/45 27/28-8/45 27/56-4/45 27/28-4/90 81/28-4/45 27/28-12/45 27/84-4/45 27/28-20/45 27/28-28/45