Subtract 40/84 from 4/15
4/15 - 40/84 is -22/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 15 × 28 = 420,
4/15 = 4 × 28/15 × 28 = 112/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
40/84 = 40 × 5/84 × 5 = 200/420 - Subtract the two like fractions:
112/420 - 200/420 = 112 - 200/420 = -88/420 - After reducing the fraction, the answer is -22/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/15-40/84 4/15-80/84 4/30-40/84 12/15-40/84 4/45-40/84 20/15-40/84 4/75-40/84 28/15-40/84