Subtract 15/72 from 42/4
1st number: 10 2/4, 2nd number: 15/72
42/4 - 15/72 is 247/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 4 × 18 = 72,
42/4 = 42 × 18/4 × 18 = 756/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
15/72 = 15 × 1/72 × 1 = 15/72 - Subtract the two like fractions:
756/72 - 15/72 = 756 - 15/72 = 741/72 - After reducing the fraction, the answer is 247/24
- In mixed form: 107/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/4-15/72 42/4-30/72 42/8-15/72 42/4-45/72 42/12-15/72 42/4-75/72 42/20-15/72 42/28-15/72