Subtract 40/54 from 42/40
1st number: 1 2/40, 2nd number: 40/54
42/40 - 40/54 is 167/540.
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,
40/54 = 40 × 20/54 × 20 = 800/1080 - Subtract the two like fractions:
1134/1080 - 800/1080 = 1134 - 800/1080 = 334/1080 - After reducing the fraction, the answer is 167/540
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/40-40/54 42/40-80/54 42/80-40/54