Add 30/12 and 70/18
1st number: 2 6/12, 2nd number: 3 16/18
30/12 + 70/18 is 115/18.
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,
30/12 = 30 × 3/12 × 3 = 90/36 - Likewise, for the 2nd fraction, since 18 × 2 = 36,
70/18 = 70 × 2/18 × 2 = 140/36 - Add the two like fractions:
90/36 + 140/36 = 90 + 140/36 = 230/36 - 230/36 simplified gives 115/18
- So, 30/12 + 70/18 = 115/18
In mixed form: 67/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/12+70/18 30/24+70/18 30/12+70/36 90/12+70/18 30/36+70/18 30/12+70/54 30/60+70/18 30/12+70/90 30/84+70/18