Add 72/12 and 21/6
1st number: 6 0/12, 2nd number: 3 3/6
72/12 + 21/6 is 19/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 6 is 12
Next, find the equivalent fraction of both fractional numbers with denominator 12 - For the 1st fraction, since 12 × 1 = 12,
72/12 = 72 × 1/12 × 1 = 72/12 - Likewise, for the 2nd fraction, since 6 × 2 = 12,
21/6 = 21 × 2/6 × 2 = 42/12 - Add the two like fractions:
72/12 + 42/12 = 72 + 42/12 = 114/12 - 114/12 simplified gives 19/2
- So, 72/12 + 21/6 = 19/2
In mixed form: 91/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/12+42/6 72/24+21/6 72/12+21/12 72/12+63/6 72/36+21/6 72/12+21/18 72/60+21/6 72/12+21/30 72/84+21/6 72/12+21/42