Subtract 50/54 from 15/40
15/40 - 50/54 is -119/216.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 54 is 1080
Next, find the equivalent fraction of both fractional numbers with denominator 1080 - For the 1st fraction, since 40 × 27 = 1080,
15/40 = 15 × 27/40 × 27 = 405/1080 - Likewise, for the 2nd fraction, since 54 × 20 = 1080,
50/54 = 50 × 20/54 × 20 = 1000/1080 - Subtract the two like fractions:
405/1080 - 1000/1080 = 405 - 1000/1080 = -595/1080 - After reducing the fraction, the answer is -119/216
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/40-50/54 15/80-50/54 45/40-50/54 75/40-50/54