Subtract 25/63 from 8/18
8/18 - 25/63 is 1/21.
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,
25/63 = 25 × 2/63 × 2 = 50/126 - Subtract the two like fractions:
56/126 - 50/126 = 56 - 50/126 = 6/126 - After reducing the fraction, the answer is 1/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/18-25/63 8/18-50/63 8/36-25/63 24/18-25/63 8/18-75/63 8/54-25/63 40/18-25/63 8/90-25/63 56/18-25/63