Subtract 42/9 from 15/24
1st number: 15/24, 2nd number: 4 6/9
15/24 - 42/9 is -97/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 9 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 24 × 3 = 72,
15/24 = 15 × 3/24 × 3 = 45/72 - Likewise, for the 2nd fraction, since 9 × 8 = 72,
42/9 = 42 × 8/9 × 8 = 336/72 - Subtract the two like fractions:
45/72 - 336/72 = 45 - 336/72 = -291/72 - After reducing the fraction, the answer is -97/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/24-42/9 15/24-84/9 15/48-42/9 15/24-42/18 45/24-42/9 15/72-42/9 15/24-42/27 75/24-42/9 15/24-42/45 15/24-42/63