Subtract 1/12 from 42/9
1st number: 4 6/9, 2nd number: 1/12
42/9 - 1/12 is 55/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 12 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 9 × 4 = 36,
42/9 = 42 × 4/9 × 4 = 168/36 - Likewise, for the 2nd fraction, since 12 × 3 = 36,
1/12 = 1 × 3/12 × 3 = 3/36 - Subtract the two like fractions:
168/36 - 3/36 = 168 - 3/36 = 165/36 - After reducing the fraction, the answer is 55/12
- In mixed form: 47/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/9-1/12 42/9-2/12 42/18-1/12 42/9-1/24 42/9-3/12 42/27-1/12 42/9-1/36 42/9-5/12 42/45-1/12 42/9-1/60 42/9-7/12 42/63-1/12 42/9-1/84