Subtract 21/63 from 6/15
6/15 - 21/63 is 1/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 63 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 15 × 21 = 315,
6/15 = 6 × 21/15 × 21 = 126/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
21/63 = 21 × 5/63 × 5 = 105/315 - Subtract the two like fractions:
126/315 - 105/315 = 126 - 105/315 = 21/315 - After reducing the fraction, the answer is 1/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/15-21/63 6/15-42/63 6/30-21/63 18/15-21/63 6/45-21/63 30/15-21/63 6/75-21/63 42/15-21/63