Subtract 12/40 from 40/54
40/54 - 12/40 is 119/270.
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,
40/54 = 40 × 20/54 × 20 = 800/1080 - Likewise, for the 2nd fraction, since 40 × 27 = 1080,
12/40 = 12 × 27/40 × 27 = 324/1080 - Subtract the two like fractions:
800/1080 - 324/1080 = 800 - 324/1080 = 476/1080 - After reducing the fraction, the answer is 119/270
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/54-12/40 40/54-24/40 40/54-12/80 40/54-36/40 40/54-60/40 40/54-84/40