Subtract 45/28 from 1/18
1st number: 1/18, 2nd number: 1 17/28
1/18 - 45/28 is -391/252.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 28 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 18 × 14 = 252,
1/18 = 1 × 14/18 × 14 = 14/252 - Likewise, for the 2nd fraction, since 28 × 9 = 252,
45/28 = 45 × 9/28 × 9 = 405/252 - Subtract the two like fractions:
14/252 - 405/252 = 14 - 405/252 = -391/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/18-45/28 1/18-90/28 1/36-45/28 1/18-45/56 3/18-45/28 1/54-45/28 1/18-45/84 5/18-45/28 1/90-45/28 7/18-45/28