Subtract 8/63 from 8/18
8/18 - 8/63 is 20/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 63 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
8/18 = 8 × 7/18 × 7 = 56/126 - Likewise, for the 2nd fraction, since 63 × 2 = 126,
8/63 = 8 × 2/63 × 2 = 16/126 - Subtract the two like fractions:
56/126 - 16/126 = 56 - 16/126 = 40/126 - After reducing the fraction, the answer is 20/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/18-8/63 8/18-16/63 8/36-8/63 24/18-8/63 8/18-24/63 8/54-8/63 40/18-8/63 8/18-40/63 8/90-8/63 56/18-8/63 8/18-56/63