Add 24/8 and 27/21
1st number: 3 0/8, 2nd number: 1 6/21
24/8 + 27/21 is 30/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 8 × 21 = 168,
24/8 = 24 × 21/8 × 21 = 504/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
27/21 = 27 × 8/21 × 8 = 216/168 - Add the two like fractions:
504/168 + 216/168 = 504 + 216/168 = 720/168 - 720/168 simplified gives 30/7
- So, 24/8 + 27/21 = 30/7
In mixed form: 42/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/8+27/21 24/8+54/21 24/16+27/21 24/8+27/42 72/8+27/21 24/8+81/21 24/8+27/63 24/40+27/21 24/56+27/21