Subtract 3/63 from 20/15
1st number: 1 5/15, 2nd number: 3/63
20/15 - 3/63 is 9/7.
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,
20/15 = 20 × 21/15 × 21 = 420/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
3/63 = 3 × 5/63 × 5 = 15/315 - Subtract the two like fractions:
420/315 - 15/315 = 420 - 15/315 = 405/315 - After reducing the fraction, the answer is 9/7
- In mixed form: 12/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/15-3/63 20/15-6/63 20/30-3/63 60/15-3/63 20/15-9/63 20/45-3/63 20/15-15/63 20/75-3/63 20/15-21/63