Subtract 2/15 from 40/84
40/84 - 2/15 is 12/35.
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,
40/84 = 40 × 5/84 × 5 = 200/420 - Likewise, for the 2nd fraction, since 15 × 28 = 420,
2/15 = 2 × 28/15 × 28 = 56/420 - Subtract the two like fractions:
200/420 - 56/420 = 200 - 56/420 = 144/420 - After reducing the fraction, the answer is 12/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/84-2/15 40/84-4/15 40/84-2/30 40/84-6/15 40/84-2/45 40/84-10/15 40/84-2/75 40/84-14/15