Subtract 40/48 from 8/18
8/18 - 40/48 is -7/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 48 is 144
Next, find the equivalent fraction of both fractional numbers with denominator 144 - For the 1st fraction, since 18 × 8 = 144,
8/18 = 8 × 8/18 × 8 = 64/144 - Likewise, for the 2nd fraction, since 48 × 3 = 144,
40/48 = 40 × 3/48 × 3 = 120/144 - Subtract the two like fractions:
64/144 - 120/144 = 64 - 120/144 = -56/144 - After reducing the fraction, the answer is -7/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/18-40/48 8/18-80/48 8/36-40/48 8/18-40/96 24/18-40/48 8/54-40/48 40/18-40/48 8/90-40/48 56/18-40/48