Add 14/21 and 80/54, Solve 14/21 + 1 26/54 as a fraction

Add 14/21 and 80/54

1^st number: 14/21, 2^nd number: 1 26/54

14/21 + 80/54 is 58/27.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 54 is 378

Next, find the equivalent fraction of both fractional numbers with denominator 378
For the 1st fraction, since 21 × 18 = 378,
14/21 = 14 × 18/21 × 18 = 252/378
Likewise, for the 2nd fraction, since 54 × 7 = 378,
80/54 = 80 × 7/54 × 7 = 560/378
Add the two like fractions:
252/378 + 560/378 = 252 + 560/378 = 812/378
812/378 simplified gives 58/27
So, 14/21 + 80/54 = 58/27
In mixed form: 24/27

MathStep (Works offline)

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