Add 8/21 and 80/32, Solve 8/21 + 2 16/32 as a fraction

Add 8/21 and 80/32

1^st number: 8/21, 2^nd number: 2 16/32

8/21 + 80/32 is 121/42.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 32 is 672

Next, find the equivalent fraction of both fractional numbers with denominator 672
For the 1st fraction, since 21 × 32 = 672,
8/21 = 8 × 32/21 × 32 = 256/672
Likewise, for the 2nd fraction, since 32 × 21 = 672,
80/32 = 80 × 21/32 × 21 = 1680/672
Add the two like fractions:
256/672 + 1680/672 = 256 + 1680/672 = 1936/672
1936/672 simplified gives 121/42
So, 8/21 + 80/32 = 121/42
In mixed form: 237/42

MathStep (Works offline)

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