Subtract 25/54 from 42/40
1st number: 1 2/40, 2nd number: 25/54
42/40 - 25/54 is 317/540.
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,
42/40 = 42 × 27/40 × 27 = 1134/1080 - Likewise, for the 2nd fraction, since 54 × 20 = 1080,
25/54 = 25 × 20/54 × 20 = 500/1080 - Subtract the two like fractions:
1134/1080 - 500/1080 = 1134 - 500/1080 = 634/1080 - After reducing the fraction, the answer is 317/540
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/40-25/54 42/40-50/54 42/80-25/54 42/40-75/54