Subtract 15/5 from 63/21
1st number: 3 0/21, 2nd number: 3 0/5
63/21 - 15/5 is 0/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 5 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 21 × 5 = 105,
63/21 = 63 × 5/21 × 5 = 315/105 - Likewise, for the 2nd fraction, since 5 × 21 = 105,
15/5 = 15 × 21/5 × 21 = 315/105 - Subtract the two like fractions:
315/105 - 315/105 = 315 - 315/105 = 0/105 - The answer is 0
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/21-30/5 63/42-15/5 63/21-15/10 63/21-45/5 63/21-75/5 63/21-15/25 63/21-15/35