Add 27/30 and 81/18
1st number: 27/30, 2nd number: 4 9/18
27/30 + 81/18 is 27/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
27/30 = 27 × 3/30 × 3 = 81/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
81/18 = 81 × 5/18 × 5 = 405/90 - Add the two like fractions:
81/90 + 405/90 = 81 + 405/90 = 486/90 - 486/90 simplified gives 27/5
- So, 27/30 + 81/18 = 27/5
In mixed form: 52/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/30+81/18 27/60+81/18 27/30+81/36 81/30+81/18 27/90+81/18 27/30+81/54 27/30+81/90