Add 21/25 and 56/9, Solve 21/25 + 6 2/9 as a fraction

Add 21/25 and 56/9

1^st number: 21/25, 2^nd number: 6 2/9

21/25 + 56/9 is 1589/225.

Find the least common denominator or LCM of the two denominators:
LCM of 25 and 9 is 225

Next, find the equivalent fraction of both fractional numbers with denominator 225
For the 1st fraction, since 25 × 9 = 225,
21/25 = 21 × 9/25 × 9 = 189/225
Likewise, for the 2nd fraction, since 9 × 25 = 225,
56/9 = 56 × 25/9 × 25 = 1400/225
Add the two like fractions:
189/225 + 1400/225 = 189 + 1400/225 = 1589/225
So, 21/25 + 56/9 = 1589/225
In mixed form: 714/225

MathStep (Works offline)

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