Add 4/12 and 42/54
4/12 + 42/54 is 10/9.
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,
4/12 = 4 × 9/12 × 9 = 36/108 - Likewise, for the 2nd fraction, since 54 × 2 = 108,
42/54 = 42 × 2/54 × 2 = 84/108 - Add the two like fractions:
36/108 + 84/108 = 36 + 84/108 = 120/108 - 120/108 simplified gives 10/9
- So, 4/12 + 42/54 = 10/9
In mixed form: 11/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/12+42/54 4/12+84/54 4/24+42/54 4/36+42/54 20/12+42/54 4/60+42/54 28/12+42/54 4/84+42/54