Subtract 20/84 from 10/28
10/28 - 20/84 is 5/42.
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,
10/28 = 10 × 3/28 × 3 = 30/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
20/84 = 20 × 1/84 × 1 = 20/84 - Subtract the two like fractions:
30/84 - 20/84 = 30 - 20/84 = 10/84 - After reducing the fraction, the answer is 5/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/28-20/84 10/28-40/84 10/56-20/84 30/28-20/84 10/28-60/84 10/84-20/84 50/28-20/84 70/28-20/84