Subtract 49/15 from 21/63
1st number: 21/63, 2nd number: 3 4/15
21/63 - 49/15 is -44/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 15 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 63 × 5 = 315,
21/63 = 21 × 5/63 × 5 = 105/315 - Likewise, for the 2nd fraction, since 15 × 21 = 315,
49/15 = 49 × 21/15 × 21 = 1029/315 - Subtract the two like fractions:
105/315 - 1029/315 = 105 - 1029/315 = -924/315 - After reducing the fraction, the answer is -44/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/63-49/15 21/63-98/15 21/63-49/30 21/63-49/45 21/63-49/75