Subtract 49/27 from 42/12
1st number: 3 6/12, 2nd number: 1 22/27
42/12 - 49/27 is 91/54.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 27 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 12 × 9 = 108,
42/12 = 42 × 9/12 × 9 = 378/108 - Likewise, for the 2nd fraction, since 27 × 4 = 108,
49/27 = 49 × 4/27 × 4 = 196/108 - Subtract the two like fractions:
378/108 - 196/108 = 378 - 196/108 = 182/108 - After reducing the fraction, the answer is 91/54
- In mixed form: 137/54
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/12-49/27 42/12-98/27 42/24-49/27 42/12-49/54 42/36-49/27 42/12-49/81 42/60-49/27 42/84-49/27