Add 30/36 and 20/12
1st number: 30/36, 2nd number: 1 8/12
30/36 + 20/12 is 5/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 12 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 36 × 1 = 36,
30/36 = 30 × 1/36 × 1 = 30/36 - Likewise, for the 2nd fraction, since 12 × 3 = 36,
20/12 = 20 × 3/12 × 3 = 60/36 - Add the two like fractions:
30/36 + 60/36 = 30 + 60/36 = 90/36 - 90/36 simplified gives 5/2
- So, 30/36 + 20/12 = 5/2
In mixed form: 21/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/36+20/12 30/36+40/12 30/72+20/12 30/36+20/24 90/36+20/12 30/36+60/12 30/36+20/36 30/36+20/60 30/36+20/84