Subtract 28/84 from 1/5
1/5 - 28/84 is -2/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 5 × 84 = 420,
1/5 = 1 × 84/5 × 84 = 84/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
28/84 = 28 × 5/84 × 5 = 140/420 - Subtract the two like fractions:
84/420 - 140/420 = 84 - 140/420 = -56/420 - After reducing the fraction, the answer is -2/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/5-28/84 1/5-56/84 1/10-28/84 3/5-28/84 1/15-28/84 1/25-28/84 7/5-28/84 1/35-28/84