Add 15/18 and 6/14, Solve 15/18 + 6/14 as a fraction

Add 15/18 and 6/14

15/18 + 6/14 is 53/42.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 14 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 18 × 7 = 126,
15/18 = 15 × 7/18 × 7 = 105/126
Likewise, for the 2nd fraction, since 14 × 9 = 126,
6/14 = 6 × 9/14 × 9 = 54/126
Add the two like fractions:
105/126 + 54/126 = 105 + 54/126 = 159/126
159/126 simplified gives 53/42
So, 15/18 + 6/14 = 53/42
In mixed form: 111/42

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad