Add 70/98 and 16/21, Solve 70/98 + 16/21 as a fraction

Add 70/98 and 16/21

70/98 + 16/21 is 31/21.

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

Next, find the equivalent fraction of both fractional numbers with denominator 294
For the 1st fraction, since 98 × 3 = 294,
70/98 = 70 × 3/98 × 3 = 210/294
Likewise, for the 2nd fraction, since 21 × 14 = 294,
16/21 = 16 × 14/21 × 14 = 224/294
Add the two like fractions:
210/294 + 224/294 = 210 + 224/294 = 434/294
434/294 simplified gives 31/21
So, 70/98 + 16/21 = 31/21
In mixed form: 110/21

MathStep (Works offline)

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