Add 81/27 and 30/18
1st number: 3 0/27, 2nd number: 1 12/18
81/27 + 30/18 is 14/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 18 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 27 × 2 = 54,
81/27 = 81 × 2/27 × 2 = 162/54 - Likewise, for the 2nd fraction, since 18 × 3 = 54,
30/18 = 30 × 3/18 × 3 = 90/54 - Add the two like fractions:
162/54 + 90/54 = 162 + 90/54 = 252/54 - 252/54 simplified gives 14/3
- So, 81/27 + 30/18 = 14/3
In mixed form: 42/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/27+60/18 81/54+30/18 81/27+30/36 81/27+90/18 81/27+30/54 81/27+30/90