Subtract 54/63 from 20/5
1st number: 4 0/5, 2nd number: 54/63
20/5 - 54/63 is 22/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 63 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 5 × 63 = 315,
20/5 = 20 × 63/5 × 63 = 1260/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
54/63 = 54 × 5/63 × 5 = 270/315 - Subtract the two like fractions:
1260/315 - 270/315 = 1260 - 270/315 = 990/315 - After reducing the fraction, the answer is 22/7
- In mixed form: 31/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/5-54/63 20/10-54/63 60/5-54/63 20/15-54/63 20/25-54/63 20/35-54/63