Subtract 5/63 from 28/18
1st number: 1 10/18, 2nd number: 5/63
28/18 - 5/63 is 31/21.
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,
28/18 = 28 × 7/18 × 7 = 196/126 - Likewise, for the 2nd fraction, since 63 × 2 = 126,
5/63 = 5 × 2/63 × 2 = 10/126 - Subtract the two like fractions:
196/126 - 10/126 = 196 - 10/126 = 186/126 - After reducing the fraction, the answer is 31/21
- In mixed form: 110/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/18-5/63 28/18-10/63 28/36-5/63 84/18-5/63 28/18-15/63 28/54-5/63 28/18-25/63 28/90-5/63 28/18-35/63