Add 3/21 and 8/16
3/21 + 8/16 is 9/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 16 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 21 × 16 = 336,
3/21 = 3 × 16/21 × 16 = 48/336 - Likewise, for the 2nd fraction, since 16 × 21 = 336,
8/16 = 8 × 21/16 × 21 = 168/336 - Add the two like fractions:
48/336 + 168/336 = 48 + 168/336 = 216/336 - 216/336 simplified gives 9/14
- So, 3/21 + 8/16 = 9/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/21+8/16 3/42+8/16 3/21+8/32 9/21+8/16 3/21+24/16 3/63+8/16 3/21+8/48 15/21+8/16 3/21+40/16 3/21+8/80 3/21+56/16