Add 9/21 and 9/16
9/21 + 9/16 is 111/112.
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,
9/21 = 9 × 16/21 × 16 = 144/336 - Likewise, for the 2nd fraction, since 16 × 21 = 336,
9/16 = 9 × 21/16 × 21 = 189/336 - Add the two like fractions:
144/336 + 189/336 = 144 + 189/336 = 333/336 - 333/336 simplified gives 111/112
- So, 9/21 + 9/16 = 111/112
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/21+9/16 9/21+18/16 9/42+9/16 9/21+9/32 27/21+9/16 9/21+27/16 9/63+9/16 9/21+9/48 45/21+9/16 9/21+45/16 9/21+9/80 63/21+9/16 9/21+63/16