Add 20/49 and 25/8, Solve 20/49 + 3 1/8 as a fraction

Add 20/49 and 25/8

1^st number: 20/49, 2^nd number: 3 1/8

20/49 + 25/8 is 1385/392.

Find the least common denominator or LCM of the two denominators:
LCM of 49 and 8 is 392

Next, find the equivalent fraction of both fractional numbers with denominator 392
For the 1st fraction, since 49 × 8 = 392,
20/49 = 20 × 8/49 × 8 = 160/392
Likewise, for the 2nd fraction, since 8 × 49 = 392,
25/8 = 25 × 49/8 × 49 = 1225/392
Add the two like fractions:
160/392 + 1225/392 = 160 + 1225/392 = 1385/392
So, 20/49 + 25/8 = 1385/392
In mixed form: 3209/392

MathStep (Works offline)

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