Subtract 20/63 from 15/36
15/36 - 20/63 is 25/252.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 63 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 36 × 7 = 252,
15/36 = 15 × 7/36 × 7 = 105/252 - Likewise, for the 2nd fraction, since 63 × 4 = 252,
20/63 = 20 × 4/63 × 4 = 80/252 - Subtract the two like fractions:
105/252 - 80/252 = 105 - 80/252 = 25/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/36-20/63 15/36-40/63 15/72-20/63 45/36-20/63 15/36-60/63 75/36-20/63