Subtract 42/15 from 15/2
1st number: 7 1/2, 2nd number: 2 12/15
15/2 - 42/15 is 47/10.
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,
42/15 = 42 × 2/15 × 2 = 84/30 - Subtract the two like fractions:
225/30 - 84/30 = 225 - 84/30 = 141/30 - After reducing the fraction, the answer is 47/10
- In mixed form: 47/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/2-42/15 15/2-84/15 15/4-42/15 15/2-42/30 45/2-42/15 15/6-42/15 15/2-42/45 75/2-42/15 15/10-42/15 15/2-42/75 15/14-42/15