Add 30/12 and 18/7
1st number: 2 6/12, 2nd number: 2 4/7
30/12 + 18/7 is 71/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 7 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
30/12 = 30 × 7/12 × 7 = 210/84 - Likewise, for the 2nd fraction, since 7 × 12 = 84,
18/7 = 18 × 12/7 × 12 = 216/84 - Add the two like fractions:
210/84 + 216/84 = 210 + 216/84 = 426/84 - 426/84 simplified gives 71/14
- So, 30/12 + 18/7 = 71/14
In mixed form: 51/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/12+18/7 30/12+36/7 30/24+18/7 30/12+18/14 90/12+18/7 30/12+54/7 30/36+18/7 30/12+18/21 30/12+90/7 30/60+18/7 30/12+18/35 30/84+18/7 30/12+18/49