Add 15/24 and 27/21
1st number: 15/24, 2nd number: 1 6/21
15/24 + 27/21 is 107/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 24 × 7 = 168,
15/24 = 15 × 7/24 × 7 = 105/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
27/21 = 27 × 8/21 × 8 = 216/168 - Add the two like fractions:
105/168 + 216/168 = 105 + 216/168 = 321/168 - 321/168 simplified gives 107/56
- So, 15/24 + 27/21 = 107/56
In mixed form: 151/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/24+27/21 15/24+54/21 15/48+27/21 15/24+27/42 45/24+27/21 15/24+81/21 15/72+27/21 15/24+27/63 75/24+27/21