Add 28/21 and 24/14
1st number: 1 7/21, 2nd number: 1 10/14
28/21 + 24/14 is 64/21.
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,
28/21 = 28 × 2/21 × 2 = 56/42 - Likewise, for the 2nd fraction, since 14 × 3 = 42,
24/14 = 24 × 3/14 × 3 = 72/42 - Add the two like fractions:
56/42 + 72/42 = 56 + 72/42 = 128/42 - 128/42 simplified gives 64/21
- So, 28/21 + 24/14 = 64/21
In mixed form: 31/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/21+24/14 28/21+48/14 28/42+24/14 28/21+24/28 84/21+24/14 28/21+72/14 28/63+24/14 28/21+24/42 28/21+24/70 28/21+24/98