Add 16/21 and 8/28
16/21 + 8/28 is 22/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
16/21 = 16 × 4/21 × 4 = 64/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
8/28 = 8 × 3/28 × 3 = 24/84 - Add the two like fractions:
64/84 + 24/84 = 64 + 24/84 = 88/84 - 88/84 simplified gives 22/21
- So, 16/21 + 8/28 = 22/21
In mixed form: 11/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/21+8/28 16/21+16/28 16/42+8/28 16/21+8/56 48/21+8/28 16/21+24/28 16/63+8/28 16/21+8/84 80/21+8/28 16/21+40/28 16/21+56/28