Subtract 9/12 from 42/6
1st number: 7 0/6, 2nd number: 9/12
42/6 - 9/12 is 25/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 12 is 12
Next, find the equivalent fraction of both fractional numbers with denominator 12 - For the 1st fraction, since 6 × 2 = 12,
42/6 = 42 × 2/6 × 2 = 84/12 - Likewise, for the 2nd fraction, since 12 × 1 = 12,
9/12 = 9 × 1/12 × 1 = 9/12 - Subtract the two like fractions:
84/12 - 9/12 = 84 - 9/12 = 75/12 - After reducing the fraction, the answer is 25/4
- In mixed form: 61/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/6-9/12 42/6-18/12 42/12-9/12 42/6-9/24 42/6-27/12 42/18-9/12 42/6-9/36 42/6-45/12 42/30-9/12 42/6-9/60 42/6-63/12 42/6-9/84