Subtract 54/15 from 15/2
1st number: 7 1/2, 2nd number: 3 9/15
15/2 - 54/15 is 39/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 15 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 2 × 15 = 30,
15/2 = 15 × 15/2 × 15 = 225/30 - Likewise, for the 2nd fraction, since 15 × 2 = 30,
54/15 = 54 × 2/15 × 2 = 108/30 - Subtract the two like fractions:
225/30 - 108/30 = 225 - 108/30 = 117/30 - After reducing the fraction, the answer is 39/10
- In mixed form: 39/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/2-54/15 15/4-54/15 15/2-54/30 45/2-54/15 15/6-54/15 15/2-54/45 75/2-54/15 15/10-54/15 15/2-54/75 15/14-54/15