Subtract 14/45 from 15/18
15/18 - 14/45 is 47/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
15/18 = 15 × 5/18 × 5 = 75/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
14/45 = 14 × 2/45 × 2 = 28/90 - Subtract the two like fractions:
75/90 - 28/90 = 75 - 28/90 = 47/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/18-14/45 15/18-28/45 15/36-14/45 15/18-14/90 45/18-14/45 15/18-42/45 15/54-14/45 75/18-14/45 15/18-70/45 15/90-14/45 15/18-98/45