Subtract 2/5 from 4/84
4/84 - 2/5 is -37/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 5 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
4/84 = 4 × 5/84 × 5 = 20/420 - Likewise, for the 2nd fraction, since 5 × 84 = 420,
2/5 = 2 × 84/5 × 84 = 168/420 - Subtract the two like fractions:
20/420 - 168/420 = 20 - 168/420 = -148/420 - After reducing the fraction, the answer is -37/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/84-2/5 4/84-4/5 4/84-2/10 12/84-2/5 4/84-6/5 4/84-2/15 20/84-2/5 4/84-10/5 4/84-2/25 28/84-2/5 4/84-14/5 4/84-2/35