Subtract 3/5 from 20/63
20/63 - 3/5 is -89/315.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 5 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 63 × 5 = 315,
20/63 = 20 × 5/63 × 5 = 100/315 - Likewise, for the 2nd fraction, since 5 × 63 = 315,
3/5 = 3 × 63/5 × 63 = 189/315 - Subtract the two like fractions:
100/315 - 189/315 = 100 - 189/315 = -89/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/63-3/5 20/63-6/5 20/63-3/10 60/63-3/5 20/63-9/5 20/63-3/15 20/63-15/5 20/63-3/25 20/63-21/5 20/63-3/35