Subtract 5/84 from 18/28
18/28 - 5/84 is 7/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 84 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 84 × 1 = 84,
5/84 = 5 × 1/84 × 1 = 5/84 - Subtract the two like fractions:
54/84 - 5/84 = 54 - 5/84 = 49/84 - After reducing the fraction, the answer is 7/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/28-5/84 18/28-10/84 18/56-5/84 54/28-5/84 18/28-15/84 18/84-5/84 90/28-5/84 18/28-25/84 18/28-35/84