Subtract 3/18 from 4/28
4/28 - 3/18 is -1/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 18 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 28 × 9 = 252,
4/28 = 4 × 9/28 × 9 = 36/252 - Likewise, for the 2nd fraction, since 18 × 14 = 252,
3/18 = 3 × 14/18 × 14 = 42/252 - Subtract the two like fractions:
36/252 - 42/252 = 36 - 42/252 = -6/252 - After reducing the fraction, the answer is -1/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/28-3/18 4/28-6/18 4/56-3/18 4/28-3/36 12/28-3/18 4/28-9/18 4/84-3/18 4/28-3/54 20/28-3/18 4/28-15/18 4/28-3/90 4/28-21/18