Add 14/12 and 9/72, Solve 1 2/12 + 9/72 as a fraction

Add 14/12 and 9/72

1^st number: 1 2/12, 2^nd number: 9/72

14/12 + 9/72 is 31/24.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 72 is 72

Next, find the equivalent fraction of both fractional numbers with denominator 72
For the 1st fraction, since 12 × 6 = 72,
14/12 = 14 × 6/12 × 6 = 84/72
Likewise, for the 2nd fraction, since 72 × 1 = 72,
9/72 = 9 × 1/72 × 1 = 9/72
Add the two like fractions:
84/72 + 9/72 = 84 + 9/72 = 93/72
93/72 simplified gives 31/24
So, 14/12 + 9/72 = 31/24
In mixed form: 17/24

MathStep (Works offline)

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