Subtract 6/40 from 42/54
42/54 - 6/40 is 113/180.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 40 is 1080
Next, find the equivalent fraction of both fractional numbers with denominator 1080 - For the 1st fraction, since 54 × 20 = 1080,
42/54 = 42 × 20/54 × 20 = 840/1080 - Likewise, for the 2nd fraction, since 40 × 27 = 1080,
6/40 = 6 × 27/40 × 27 = 162/1080 - Subtract the two like fractions:
840/1080 - 162/1080 = 840 - 162/1080 = 678/1080 - After reducing the fraction, the answer is 113/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/54-6/40 42/54-12/40 42/54-6/80 42/54-18/40 42/54-30/40 42/54-42/40