Subtract 8/7 from 18/24
1st number: 18/24, 2nd number: 1 1/7
18/24 - 8/7 is -11/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 7 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 24 × 7 = 168,
18/24 = 18 × 7/24 × 7 = 126/168 - Likewise, for the 2nd fraction, since 7 × 24 = 168,
8/7 = 8 × 24/7 × 24 = 192/168 - Subtract the two like fractions:
126/168 - 192/168 = 126 - 192/168 = -66/168 - After reducing the fraction, the answer is -11/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/24-8/7 18/24-16/7 18/48-8/7 18/24-8/14 54/24-8/7 18/24-24/7 18/72-8/7 18/24-8/21 90/24-8/7 18/24-40/7 18/24-8/35 18/24-56/7 18/24-8/49