Subtract 14/72 from 42/24
1st number: 1 18/24, 2nd number: 14/72
42/24 - 14/72 is 14/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 24 × 3 = 72,
42/24 = 42 × 3/24 × 3 = 126/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
14/72 = 14 × 1/72 × 1 = 14/72 - Subtract the two like fractions:
126/72 - 14/72 = 126 - 14/72 = 112/72 - After reducing the fraction, the answer is 14/9
- In mixed form: 15/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/24-14/72 42/24-28/72 42/48-14/72 42/24-42/72 42/72-14/72 42/24-70/72 42/24-98/72