Add 8/21 and 28/14
1st number: 8/21, 2nd number: 2 0/14
8/21 + 28/14 is 50/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 14 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 21 × 2 = 42,
8/21 = 8 × 2/21 × 2 = 16/42 - Likewise, for the 2nd fraction, since 14 × 3 = 42,
28/14 = 28 × 3/14 × 3 = 84/42 - Add the two like fractions:
16/42 + 84/42 = 16 + 84/42 = 100/42 - 100/42 simplified gives 50/21
- So, 8/21 + 28/14 = 50/21
In mixed form: 28/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/21+28/14 8/21+56/14 8/42+28/14 24/21+28/14 8/21+84/14 8/63+28/14 8/21+28/42 40/21+28/14 8/21+28/70 56/21+28/14 8/21+28/98