Subtract 1/63 from 15/18
15/18 - 1/63 is 103/126.
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,
15/18 = 15 × 7/18 × 7 = 105/126 - Likewise, for the 2nd fraction, since 63 × 2 = 126,
1/63 = 1 × 2/63 × 2 = 2/126 - Subtract the two like fractions:
105/126 - 2/126 = 105 - 2/126 = 103/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/18-1/63 15/18-2/63 15/36-1/63 45/18-1/63 15/18-3/63 15/54-1/63 75/18-1/63 15/18-5/63 15/90-1/63 15/18-7/63