Subtract 30/63 from 45/15
1st number: 3 0/15, 2nd number: 30/63
45/15 - 30/63 is 53/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 63 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 15 × 21 = 315,
45/15 = 45 × 21/15 × 21 = 945/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
30/63 = 30 × 5/63 × 5 = 150/315 - Subtract the two like fractions:
945/315 - 150/315 = 945 - 150/315 = 795/315 - After reducing the fraction, the answer is 53/21
- In mixed form: 211/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/15-30/63 45/15-60/63 45/30-30/63 45/15-90/63 45/75-30/63