Add 21/8 and 6/80, Solve 2 5/8 + 6/80 as a fraction

Add 21/8 and 6/80

1^st number: 2 5/8, 2^nd number: 6/80

21/8 + 6/80 is 27/10.

Find the least common denominator or LCM of the two denominators:
LCM of 8 and 80 is 80

Next, find the equivalent fraction of both fractional numbers with denominator 80
For the 1st fraction, since 8 × 10 = 80,
21/8 = 21 × 10/8 × 10 = 210/80
Likewise, for the 2nd fraction, since 80 × 1 = 80,
6/80 = 6 × 1/80 × 1 = 6/80
Add the two like fractions:
210/80 + 6/80 = 210 + 6/80 = 216/80
216/80 simplified gives 27/10
So, 21/8 + 6/80 = 27/10
In mixed form: 27/10

MathStep (Works offline)

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