Add 50/21 and 21/98, Solve 2 8/21 + 21/98 as a fraction

Add 50/21 and 21/98

1^st number: 2 8/21, 2^nd number: 21/98

50/21 + 21/98 is 109/42.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 98 is 294

Next, find the equivalent fraction of both fractional numbers with denominator 294
For the 1st fraction, since 21 × 14 = 294,
50/21 = 50 × 14/21 × 14 = 700/294
Likewise, for the 2nd fraction, since 98 × 3 = 294,
21/98 = 21 × 3/98 × 3 = 63/294
Add the two like fractions:
700/294 + 63/294 = 700 + 63/294 = 763/294
763/294 simplified gives 109/42
So, 50/21 + 21/98 = 109/42
In mixed form: 225/42

MathStep (Works offline)

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