Subtract 63/15 from 20/84
1st number: 20/84, 2nd number: 4 3/15
20/84 - 63/15 is -416/105.
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,
20/84 = 20 × 5/84 × 5 = 100/420 - Likewise, for the 2nd fraction, since 15 × 28 = 420,
63/15 = 63 × 28/15 × 28 = 1764/420 - Subtract the two like fractions:
100/420 - 1764/420 = 100 - 1764/420 = -1664/420 - After reducing the fraction, the answer is -416/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/84-63/15 20/84-63/30 60/84-63/15 20/84-63/45 20/84-63/75