Subtract 1/28 from 8/18
8/18 - 1/28 is 103/252.
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,
8/18 = 8 × 14/18 × 14 = 112/252 - Likewise, for the 2nd fraction, since 28 × 9 = 252,
1/28 = 1 × 9/28 × 9 = 9/252 - Subtract the two like fractions:
112/252 - 9/252 = 112 - 9/252 = 103/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/18-1/28 8/18-2/28 8/36-1/28 8/18-1/56 24/18-1/28 8/18-3/28 8/54-1/28 8/18-1/84 40/18-1/28 8/18-5/28 8/90-1/28 56/18-1/28 8/18-7/28