Add 30/20 and 15/36
1st number: 1 10/20, 2nd number: 15/36
30/20 + 15/36 is 23/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
30/20 = 30 × 9/20 × 9 = 270/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
15/36 = 15 × 5/36 × 5 = 75/180 - Add the two like fractions:
270/180 + 75/180 = 270 + 75/180 = 345/180 - 345/180 simplified gives 23/12
- So, 30/20 + 15/36 = 23/12
In mixed form: 111/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/20+15/36 30/20+30/36 30/40+15/36 30/20+15/72 90/20+15/36 30/20+45/36 30/60+15/36 30/20+75/36