Add 16/21 and 5/8
16/21 + 5/8 is 233/168.
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,
16/21 = 16 × 8/21 × 8 = 128/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
5/8 = 5 × 21/8 × 21 = 105/168 - Add the two like fractions:
128/168 + 105/168 = 128 + 105/168 = 233/168 - So, 16/21 + 5/8 = 233/168
In mixed form: 165/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/21+5/8 16/21+10/8 16/42+5/8 16/21+5/16 48/21+5/8 16/21+15/8 16/63+5/8 16/21+5/24 80/21+5/8 16/21+25/8 16/21+5/40 16/21+35/8 16/21+5/56