Subtract 14/90 from 27/28
27/28 - 14/90 is 1019/1260.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 90 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 90 × 14 = 1260,
14/90 = 14 × 14/90 × 14 = 196/1260 - Subtract the two like fractions:
1215/1260 - 196/1260 = 1215 - 196/1260 = 1019/1260
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/28-14/90 27/28-28/90 27/56-14/90 81/28-14/90 27/28-42/90 27/84-14/90 27/28-70/90 27/28-98/90