Add 27/6 and 21/90
1st number: 4 3/6, 2nd number: 21/90
27/6 + 21/90 is 71/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 6 × 15 = 90,
27/6 = 27 × 15/6 × 15 = 405/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
21/90 = 21 × 1/90 × 1 = 21/90 - Add the two like fractions:
405/90 + 21/90 = 405 + 21/90 = 426/90 - 426/90 simplified gives 71/15
- So, 27/6 + 21/90 = 71/15
In mixed form: 411/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/6+21/90 27/6+42/90 27/12+21/90 81/6+21/90 27/6+63/90 27/18+21/90 27/30+21/90 27/42+21/90