Subtract 16/63 from 12/15
12/15 - 16/63 is 172/315.
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,
12/15 = 12 × 21/15 × 21 = 252/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
16/63 = 16 × 5/63 × 5 = 80/315 - Subtract the two like fractions:
252/315 - 80/315 = 252 - 80/315 = 172/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/15-16/63 12/15-32/63 12/30-16/63 36/15-16/63 12/15-48/63 12/45-16/63 60/15-16/63 12/15-80/63 12/75-16/63 84/15-16/63