Add 14/12 and 54/14, Solve 1 2/12 + 3 12/14 as a fraction

Add 14/12 and 54/14

1^st number: 1 2/12, 2^nd number: 3 12/14

14/12 + 54/14 is 211/42.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 14 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 12 × 7 = 84,
14/12 = 14 × 7/12 × 7 = 98/84
Likewise, for the 2nd fraction, since 14 × 6 = 84,
54/14 = 54 × 6/14 × 6 = 324/84
Add the two like fractions:
98/84 + 324/84 = 98 + 324/84 = 422/84
422/84 simplified gives 211/42
So, 14/12 + 54/14 = 211/42
In mixed form: 51/42

MathStep (Works offline)

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