Subtract 1/3 from 18/28
18/28 - 1/3 is 13/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 3 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 28 × 3 = 84,
18/28 = 18 × 3/28 × 3 = 54/84 - Likewise, for the 2nd fraction, since 3 × 28 = 84,
1/3 = 1 × 28/3 × 28 = 28/84 - Subtract the two like fractions:
54/84 - 28/84 = 54 - 28/84 = 26/84 - After reducing the fraction, the answer is 13/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/28-1/3 18/28-2/3 18/56-1/3 18/28-1/6 54/28-1/3 18/84-1/3 18/28-1/9 90/28-1/3 18/28-5/3 18/28-1/15 18/28-7/3 18/28-1/21