Add 8/21 and 80/8
1st number: 8/21, 2nd number: 10 0/8
8/21 + 80/8 is 218/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 8 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
8/21 = 8 × 8/21 × 8 = 64/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
80/8 = 80 × 21/8 × 21 = 1680/168 - Add the two like fractions:
64/168 + 1680/168 = 64 + 1680/168 = 1744/168 - 1744/168 simplified gives 218/21
- So, 8/21 + 80/8 = 218/21
In mixed form: 108/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/21+80/8 8/42+80/8 8/21+80/16 24/21+80/8 8/63+80/8 8/21+80/24 40/21+80/8 8/21+80/40 56/21+80/8 8/21+80/56