Subtract 25/54 from 10/40
10/40 - 25/54 is -23/108.
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,
10/40 = 10 × 27/40 × 27 = 270/1080 - Likewise, for the 2nd fraction, since 54 × 20 = 1080,
25/54 = 25 × 20/54 × 20 = 500/1080 - Subtract the two like fractions:
270/1080 - 500/1080 = 270 - 500/1080 = -230/1080 - After reducing the fraction, the answer is -23/108
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/40-25/54 10/40-50/54 10/80-25/54 30/40-25/54 10/40-75/54 50/40-25/54 70/40-25/54