Subtract 21/60 from 3/63
3/63 - 21/60 is -127/420.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 60 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 63 × 20 = 1260,
3/63 = 3 × 20/63 × 20 = 60/1260 - Likewise, for the 2nd fraction, since 60 × 21 = 1260,
21/60 = 21 × 21/60 × 21 = 441/1260 - Subtract the two like fractions:
60/1260 - 441/1260 = 60 - 441/1260 = -381/1260 - After reducing the fraction, the answer is -127/420
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/63-21/60 3/63-42/60 9/63-21/60 3/63-63/60 15/63-21/60 21/63-21/60