Subtract 18/28 from 3/4
3/4 - 18/28 is 3/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 28 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 4 × 7 = 28,
3/4 = 3 × 7/4 × 7 = 21/28 - Likewise, for the 2nd fraction, since 28 × 1 = 28,
18/28 = 18 × 1/28 × 1 = 18/28 - Subtract the two like fractions:
21/28 - 18/28 = 21 - 18/28 = 3/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/4-18/28 3/4-36/28 3/8-18/28 3/4-18/56 9/4-18/28 3/4-54/28 3/12-18/28 3/4-18/84 15/4-18/28 3/4-90/28 3/20-18/28 21/4-18/28 3/28-18/28