Add 27/40 and 20/12
1st number: 27/40, 2nd number: 1 8/12
27/40 + 20/12 is 281/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 12 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
27/40 = 27 × 3/40 × 3 = 81/120 - Likewise, for the 2nd fraction, since 12 × 10 = 120,
20/12 = 20 × 10/12 × 10 = 200/120 - Add the two like fractions:
81/120 + 200/120 = 81 + 200/120 = 281/120 - So, 27/40 + 20/12 = 281/120
In mixed form: 241/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/40+20/12 27/40+40/12 27/80+20/12 27/40+20/24 81/40+20/12 27/40+60/12 27/40+20/36 27/40+20/60 27/40+20/84