Add 42/12 and 72/27
1st number: 3 6/12, 2nd number: 2 18/27
42/12 + 72/27 is 37/6.
Steps for adding 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,
72/27 = 72 × 4/27 × 4 = 288/108 - Add the two like fractions:
378/108 + 288/108 = 378 + 288/108 = 666/108 - 666/108 simplified gives 37/6
- So, 42/12 + 72/27 = 37/6
In mixed form: 61/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/12+72/27 42/24+72/27 42/12+72/54 42/36+72/27 42/12+72/81 42/60+72/27 42/84+72/27