Add 42/12 and 7/18
1st number: 3 6/12, 2nd number: 7/18
42/12 + 7/18 is 35/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 18 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 12 × 3 = 36,
42/12 = 42 × 3/12 × 3 = 126/36 - Likewise, for the 2nd fraction, since 18 × 2 = 36,
7/18 = 7 × 2/18 × 2 = 14/36 - Add the two like fractions:
126/36 + 14/36 = 126 + 14/36 = 140/36 - 140/36 simplified gives 35/9
- So, 42/12 + 7/18 = 35/9
In mixed form: 38/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/12+7/18 42/12+14/18 42/24+7/18 42/12+7/36 42/12+21/18 42/36+7/18 42/12+7/54 42/12+35/18 42/60+7/18 42/12+7/90 42/12+49/18 42/84+7/18