Subtract 15/40 from 4/54
4/54 - 15/40 is -65/216.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 40 is 1080
Next, find the equivalent fraction of both fractional numbers with denominator 1080 - For the 1st fraction, since 54 × 20 = 1080,
4/54 = 4 × 20/54 × 20 = 80/1080 - Likewise, for the 2nd fraction, since 40 × 27 = 1080,
15/40 = 15 × 27/40 × 27 = 405/1080 - Subtract the two like fractions:
80/1080 - 405/1080 = 80 - 405/1080 = -325/1080 - After reducing the fraction, the answer is -65/216
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/54-15/40 4/54-30/40 4/54-15/80 12/54-15/40 4/54-45/40 20/54-15/40 4/54-75/40 28/54-15/40