Add 7/21 and 24/8
1st number: 7/21, 2nd number: 3 0/8
7/21 + 24/8 is 10/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 8 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
7/21 = 7 × 8/21 × 8 = 56/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
24/8 = 24 × 21/8 × 21 = 504/168 - Add the two like fractions:
56/168 + 504/168 = 56 + 504/168 = 560/168 - 560/168 simplified gives 10/3
- So, 7/21 + 24/8 = 10/3
In mixed form: 31/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/21+24/8 7/21+48/8 7/42+24/8 7/21+24/16 7/21+72/8 7/63+24/8 35/21+24/8 7/21+24/40 49/21+24/8 7/21+24/56