Subtract 18/15 from 5/2
1st number: 2 1/2, 2nd number: 1 3/15
5/2 - 18/15 is 13/10.
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,
5/2 = 5 × 15/2 × 15 = 75/30 - Likewise, for the 2nd fraction, since 15 × 2 = 30,
18/15 = 18 × 2/15 × 2 = 36/30 - Subtract the two like fractions:
75/30 - 36/30 = 75 - 36/30 = 39/30 - After reducing the fraction, the answer is 13/10
- In mixed form: 13/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/2-18/15 5/2-36/15 5/4-18/15 5/2-18/30 15/2-18/15 5/2-54/15 5/6-18/15 5/2-18/45 25/2-18/15 5/2-90/15 5/10-18/15 5/2-18/75 35/2-18/15 5/14-18/15