Subtract 8/28 from 4/18
4/18 - 8/28 is -4/63.
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,
4/18 = 4 × 14/18 × 14 = 56/252 - Likewise, for the 2nd fraction, since 28 × 9 = 252,
8/28 = 8 × 9/28 × 9 = 72/252 - Subtract the two like fractions:
56/252 - 72/252 = 56 - 72/252 = -16/252 - After reducing the fraction, the answer is -4/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/18-8/28 4/18-16/28 4/36-8/28 4/18-8/56 12/18-8/28 4/18-24/28 4/54-8/28 4/18-8/84 20/18-8/28 4/18-40/28 4/90-8/28 28/18-8/28 4/18-56/28