Subtract 2/15 from 1/84
1/84 - 2/15 is -17/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 15 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
1/84 = 1 × 5/84 × 5 = 5/420 - Likewise, for the 2nd fraction, since 15 × 28 = 420,
2/15 = 2 × 28/15 × 28 = 56/420 - Subtract the two like fractions:
5/420 - 56/420 = 5 - 56/420 = -51/420 - After reducing the fraction, the answer is -17/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/84-2/15 1/84-4/15 1/84-2/30 3/84-2/15 1/84-6/15 1/84-2/45 5/84-2/15 1/84-10/15 1/84-2/75 7/84-2/15 1/84-14/15