Subtract 2/54 from 42/40
1st number: 1 2/40, 2nd number: 2/54
42/40 - 2/54 is 547/540.
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,
2/54 = 2 × 20/54 × 20 = 40/1080 - Subtract the two like fractions:
1134/1080 - 40/1080 = 1134 - 40/1080 = 1094/1080 - After reducing the fraction, the answer is 547/540
- In mixed form: 17/540
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/40-2/54 42/40-4/54 42/80-2/54 42/40-6/54 42/40-10/54 42/40-14/54