Subtract 40/54 from 15/2
1st number: 7 1/2, 2nd number: 40/54
15/2 - 40/54 is 365/54.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 54 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 2 × 27 = 54,
15/2 = 15 × 27/2 × 27 = 405/54 - Likewise, for the 2nd fraction, since 54 × 1 = 54,
40/54 = 40 × 1/54 × 1 = 40/54 - Subtract the two like fractions:
405/54 - 40/54 = 405 - 40/54 = 365/54 - In mixed form: 641/54
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/2-40/54 15/2-80/54 15/4-40/54 45/2-40/54 15/6-40/54 75/2-40/54 15/10-40/54 15/14-40/54