Subtract 50/63 from 45/18
1st number: 2 9/18, 2nd number: 50/63
45/18 - 50/63 is 215/126.
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,
45/18 = 45 × 7/18 × 7 = 315/126 - Likewise, for the 2nd fraction, since 63 × 2 = 126,
50/63 = 50 × 2/63 × 2 = 100/126 - Subtract the two like fractions:
315/126 - 100/126 = 315 - 100/126 = 215/126 - In mixed form: 189/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/18-50/63 45/36-50/63 45/54-50/63 45/90-50/63