Subtract 18/63 from 45/18
1st number: 2 9/18, 2nd number: 18/63
45/18 - 18/63 is 31/14.
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,
18/63 = 18 × 2/63 × 2 = 36/126 - Subtract the two like fractions:
315/126 - 36/126 = 315 - 36/126 = 279/126 - After reducing the fraction, the answer is 31/14
- In mixed form: 23/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/18-18/63 45/18-36/63 45/36-18/63 45/18-54/63 45/54-18/63 45/18-90/63 45/90-18/63