Subtract 28/63 from 15/20
15/20 - 28/63 is 11/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 63 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 20 × 63 = 1260,
15/20 = 15 × 63/20 × 63 = 945/1260 - Likewise, for the 2nd fraction, since 63 × 20 = 1260,
28/63 = 28 × 20/63 × 20 = 560/1260 - Subtract the two like fractions:
945/1260 - 560/1260 = 945 - 560/1260 = 385/1260 - After reducing the fraction, the answer is 11/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/20-28/63 15/20-56/63 15/40-28/63 45/20-28/63 15/20-84/63 15/60-28/63 75/20-28/63