Subtract 6/84 from 15/20
15/20 - 6/84 is 19/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 20 × 21 = 420,
15/20 = 15 × 21/20 × 21 = 315/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
6/84 = 6 × 5/84 × 5 = 30/420 - Subtract the two like fractions:
315/420 - 30/420 = 315 - 30/420 = 285/420 - After reducing the fraction, the answer is 19/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/20-6/84 15/20-12/84 15/40-6/84 45/20-6/84 15/20-18/84 15/60-6/84 75/20-6/84 15/20-30/84 15/20-42/84