Subtract 6/45 from 63/21
1st number: 3 0/21, 2nd number: 6/45
63/21 - 6/45 is 43/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 21 × 15 = 315,
63/21 = 63 × 15/21 × 15 = 945/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
6/45 = 6 × 7/45 × 7 = 42/315 - Subtract the two like fractions:
945/315 - 42/315 = 945 - 42/315 = 903/315 - After reducing the fraction, the answer is 43/15
- In mixed form: 213/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/21-12/45 63/42-6/45 63/21-6/90 63/21-18/45 63/21-30/45 63/21-42/45