Subtract 15/7 from 45/18
1st number: 2 9/18, 2nd number: 2 1/7
45/18 - 15/7 is 5/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 7 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 7 × 18 = 126,
15/7 = 15 × 18/7 × 18 = 270/126 - Subtract the two like fractions:
315/126 - 270/126 = 315 - 270/126 = 45/126 - After reducing the fraction, the answer is 5/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/18-15/7 45/18-30/7 45/36-15/7 45/18-15/14 45/18-45/7 45/54-15/7 45/18-15/21 45/18-75/7 45/90-15/7 45/18-15/35 45/18-15/49