Add 81/84 and 27/8
1st number: 81/84, 2nd number: 3 3/8
81/84 + 27/8 is 243/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 8 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 84 × 2 = 168,
81/84 = 81 × 2/84 × 2 = 162/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
27/8 = 27 × 21/8 × 21 = 567/168 - Add the two like fractions:
162/168 + 567/168 = 162 + 567/168 = 729/168 - 729/168 simplified gives 243/56
- So, 81/84 + 27/8 = 243/56
In mixed form: 419/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/84+54/8 81/84+27/16 81/84+81/8 81/84+27/24 81/84+27/40 81/84+27/56