Subtract 9/56 from 42/12
1st number: 3 6/12, 2nd number: 9/56
42/12 - 9/56 is 187/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 56 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 12 × 14 = 168,
42/12 = 42 × 14/12 × 14 = 588/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
9/56 = 9 × 3/56 × 3 = 27/168 - Subtract the two like fractions:
588/168 - 27/168 = 588 - 27/168 = 561/168 - After reducing the fraction, the answer is 187/56
- In mixed form: 319/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/12-9/56 42/12-18/56 42/24-9/56 42/12-27/56 42/36-9/56 42/12-45/56 42/60-9/56 42/12-63/56 42/84-9/56