Add 12/14 and 3/9
12/14 + 3/9 is 25/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 9 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 14 × 9 = 126,
12/14 = 12 × 9/14 × 9 = 108/126 - Likewise, for the 2nd fraction, since 9 × 14 = 126,
3/9 = 3 × 14/9 × 14 = 42/126 - Add the two like fractions:
108/126 + 42/126 = 108 + 42/126 = 150/126 - 150/126 simplified gives 25/21
- So, 12/14 + 3/9 = 25/21
In mixed form: 14/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/14+3/9 12/14+6/9 12/28+3/9 12/14+3/18 36/14+3/9 12/42+3/9 12/14+3/27 60/14+3/9 12/14+15/9 12/70+3/9 12/14+3/45 84/14+3/9 12/14+21/9 12/98+3/9 12/14+3/63