Subtract 20/5 from 30/63
1st number: 30/63, 2nd number: 4 0/5
30/63 - 20/5 is -74/21.
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,
30/63 = 30 × 5/63 × 5 = 150/315 - Likewise, for the 2nd fraction, since 5 × 63 = 315,
20/5 = 20 × 63/5 × 63 = 1260/315 - Subtract the two like fractions:
150/315 - 1260/315 = 150 - 1260/315 = -1110/315 - After reducing the fraction, the answer is -74/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/63-20/5 30/63-40/5 30/63-20/10 90/63-20/5 30/63-60/5 30/63-20/15 30/63-20/25 30/63-20/35