Add 12/14 and 15/18
12/14 + 15/18 is 71/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 18 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 18 × 7 = 126,
15/18 = 15 × 7/18 × 7 = 105/126 - Add the two like fractions:
108/126 + 105/126 = 108 + 105/126 = 213/126 - 213/126 simplified gives 71/42
- So, 12/14 + 15/18 = 71/42
In mixed form: 129/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/14+15/18 12/14+30/18 12/28+15/18 12/14+15/36 36/14+15/18 12/14+45/18 12/42+15/18 12/14+15/54 60/14+15/18 12/14+75/18 12/70+15/18 12/14+15/90 84/14+15/18 12/98+15/18