Add 5/8 and 27/21
1st number: 5/8, 2nd number: 1 6/21
5/8 + 27/21 is 107/56.
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,
5/8 = 5 × 21/8 × 21 = 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, 5/8 + 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: 10/8+27/21 5/8+54/21 5/16+27/21 5/8+27/42 15/8+27/21 5/8+81/21 5/24+27/21 5/8+27/63 25/8+27/21 5/40+27/21 35/8+27/21 5/56+27/21