Add 80/54 and 21/98, Solve 1 26/54 + 21/98 as a fraction

Add 80/54 and 21/98

1^st number: 1 26/54, 2^nd number: 21/98

80/54 + 21/98 is 641/378.

Find the least common denominator or LCM of the two denominators:
LCM of 54 and 98 is 2646

Next, find the equivalent fraction of both fractional numbers with denominator 2646
For the 1st fraction, since 54 × 49 = 2646,
80/54 = 80 × 49/54 × 49 = 3920/2646
Likewise, for the 2nd fraction, since 98 × 27 = 2646,
21/98 = 21 × 27/98 × 27 = 567/2646
Add the two like fractions:
3920/2646 + 567/2646 = 3920 + 567/2646 = 4487/2646
4487/2646 simplified gives 641/378
So, 80/54 + 21/98 = 641/378
In mixed form: 1263/378

MathStep (Works offline)

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