Subtract 45/54 from 15/2
1st number: 7 1/2, 2nd number: 45/54
15/2 - 45/54 is 20/3.
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,
45/54 = 45 × 1/54 × 1 = 45/54 - Subtract the two like fractions:
405/54 - 45/54 = 405 - 45/54 = 360/54 - After reducing the fraction, the answer is 20/3
- In mixed form: 62/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/2-45/54 15/2-90/54 15/4-45/54 45/2-45/54 15/6-45/54 75/2-45/54 15/10-45/54 15/14-45/54