Subtract 21/5 from 49/63
1st number: 49/63, 2nd number: 4 1/5
49/63 - 21/5 is -154/45.
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,
49/63 = 49 × 5/63 × 5 = 245/315 - Likewise, for the 2nd fraction, since 5 × 63 = 315,
21/5 = 21 × 63/5 × 63 = 1323/315 - Subtract the two like fractions:
245/315 - 1323/315 = 245 - 1323/315 = -1078/315 - After reducing the fraction, the answer is -154/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/63-21/5 49/63-42/5 49/63-21/10 49/63-63/5 49/63-21/15 49/63-21/25 49/63-21/35