Add 20/12 and 5/18
1st number: 1 8/12, 2nd number: 5/18
20/12 + 5/18 is 35/18.
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,
20/12 = 20 × 3/12 × 3 = 60/36 - Likewise, for the 2nd fraction, since 18 × 2 = 36,
5/18 = 5 × 2/18 × 2 = 10/36 - Add the two like fractions:
60/36 + 10/36 = 60 + 10/36 = 70/36 - 70/36 simplified gives 35/18
- So, 20/12 + 5/18 = 35/18
In mixed form: 117/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/12+5/18 20/12+10/18 20/24+5/18 20/12+5/36 60/12+5/18 20/12+15/18 20/36+5/18 20/12+5/54 20/12+25/18 20/60+5/18 20/12+5/90 20/12+35/18 20/84+5/18