Add 12/2 and 21/42
1st number: 6 0/2, 2nd number: 21/42
12/2 + 21/42 is 13/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 42 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 2 × 21 = 42,
12/2 = 12 × 21/2 × 21 = 252/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
21/42 = 21 × 1/42 × 1 = 21/42 - Add the two like fractions:
252/42 + 21/42 = 252 + 21/42 = 273/42 - 273/42 simplified gives 13/2
- So, 12/2 + 21/42 = 13/2
In mixed form: 61/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/2+21/42 12/4+21/42 12/2+21/84 36/2+21/42 12/2+63/42 12/6+21/42 60/2+21/42 12/10+21/42 84/2+21/42 12/14+21/42