Add 27/30 and 3/18
27/30 + 3/18 is 16/15.
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,
3/18 = 3 × 5/18 × 5 = 15/90 - Add the two like fractions:
81/90 + 15/90 = 81 + 15/90 = 96/90 - 96/90 simplified gives 16/15
- So, 27/30 + 3/18 = 16/15
In mixed form: 11/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/30+3/18 27/30+6/18 27/60+3/18 27/30+3/36 81/30+3/18 27/30+9/18 27/90+3/18 27/30+3/54 27/30+15/18 27/30+3/90 27/30+21/18