Add 21/50 and 54/14, Solve 21/50 + 3 12/14 as a fraction

Add 21/50 and 54/14

1^st number: 21/50, 2^nd number: 3 12/14

21/50 + 54/14 is 1497/350.

Find the least common denominator or LCM of the two denominators:
LCM of 50 and 14 is 350

Next, find the equivalent fraction of both fractional numbers with denominator 350
For the 1st fraction, since 50 × 7 = 350,
21/50 = 21 × 7/50 × 7 = 147/350
Likewise, for the 2nd fraction, since 14 × 25 = 350,
54/14 = 54 × 25/14 × 25 = 1350/350
Add the two like fractions:
147/350 + 1350/350 = 147 + 1350/350 = 1497/350
So, 21/50 + 54/14 = 1497/350
In mixed form: 497/350

MathStep (Works offline)

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