Add 12/6 and 21/40
1st number: 2 0/6, 2nd number: 21/40
12/6 + 21/40 is 101/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 6 × 20 = 120,
12/6 = 12 × 20/6 × 20 = 240/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
21/40 = 21 × 3/40 × 3 = 63/120 - Add the two like fractions:
240/120 + 63/120 = 240 + 63/120 = 303/120 - 303/120 simplified gives 101/40
- So, 12/6 + 21/40 = 101/40
In mixed form: 221/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/6+21/40 12/6+42/40 12/6+21/80 36/6+21/40 12/6+63/40 12/18+21/40 60/6+21/40 12/30+21/40 84/6+21/40 12/42+21/40