Add 42/12 and 42/54
1st number: 3 6/12, 2nd number: 42/54
42/12 + 42/54 is 77/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 54 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 54 × 2 = 108,
42/54 = 42 × 2/54 × 2 = 84/108 - Add the two like fractions:
378/108 + 84/108 = 378 + 84/108 = 462/108 - 462/108 simplified gives 77/18
- So, 42/12 + 42/54 = 77/18
In mixed form: 45/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/12+42/54 42/12+84/54 42/24+42/54 42/36+42/54 42/60+42/54 42/84+42/54