Add 14/12 and 56/18, Solve 1 2/12 + 3 2/18 as a fraction

Add 14/12 and 56/18

1^st number: 1 2/12, 2^nd number: 3 2/18

14/12 + 56/18 is 77/18.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 18 is 36

Next, find the equivalent fraction of both fractional numbers with denominator 36
For the 1st fraction, since 12 × 3 = 36,
14/12 = 14 × 3/12 × 3 = 42/36
Likewise, for the 2nd fraction, since 18 × 2 = 36,
56/18 = 56 × 2/18 × 2 = 112/36
Add the two like fractions:
42/36 + 112/36 = 42 + 112/36 = 154/36
154/36 simplified gives 77/18
So, 14/12 + 56/18 = 77/18
In mixed form: 45/18

MathStep (Works offline)

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