Add 4/2 and 21/12
1st number: 2 0/2, 2nd number: 1 9/12
4/2 + 21/12 is 15/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 12 is 12
Next, find the equivalent fraction of both fractional numbers with denominator 12 - For the 1st fraction, since 2 × 6 = 12,
4/2 = 4 × 6/2 × 6 = 24/12 - Likewise, for the 2nd fraction, since 12 × 1 = 12,
21/12 = 21 × 1/12 × 1 = 21/12 - Add the two like fractions:
24/12 + 21/12 = 24 + 21/12 = 45/12 - 45/12 simplified gives 15/4
- So, 4/2 + 21/12 = 15/4
In mixed form: 33/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/2+21/12 4/2+42/12 4/2+21/24 12/2+21/12 4/2+63/12 4/6+21/12 4/2+21/36 20/2+21/12 4/10+21/12 4/2+21/60 28/2+21/12 4/14+21/12 4/2+21/84