Subtract 3/72 from 42/24
1st number: 1 18/24, 2nd number: 3/72
42/24 - 3/72 is 41/24.
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,
3/72 = 3 × 1/72 × 1 = 3/72 - Subtract the two like fractions:
126/72 - 3/72 = 126 - 3/72 = 123/72 - After reducing the fraction, the answer is 41/24
- In mixed form: 117/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/24-3/72 42/24-6/72 42/48-3/72 42/24-9/72 42/72-3/72 42/24-15/72 42/24-21/72