Subtract 24/18 from 15/7
1st number: 2 1/7, 2nd number: 1 6/18
15/7 - 24/18 is 17/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 7 × 18 = 126,
15/7 = 15 × 18/7 × 18 = 270/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
24/18 = 24 × 7/18 × 7 = 168/126 - Subtract the two like fractions:
270/126 - 168/126 = 270 - 168/126 = 102/126 - After reducing the fraction, the answer is 17/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/7-24/18 15/7-48/18 15/14-24/18 15/7-24/36 45/7-24/18 15/7-72/18 15/21-24/18 15/7-24/54 75/7-24/18 15/35-24/18 15/7-24/90 15/49-24/18