Add 81/72 and 18/27
1st number: 1 9/72, 2nd number: 18/27
81/72 + 18/27 is 43/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 27 is 216
Next, find the equivalent fraction of both fractional numbers with denominator 216 - For the 1st fraction, since 72 × 3 = 216,
81/72 = 81 × 3/72 × 3 = 243/216 - Likewise, for the 2nd fraction, since 27 × 8 = 216,
18/27 = 18 × 8/27 × 8 = 144/216 - Add the two like fractions:
243/216 + 144/216 = 243 + 144/216 = 387/216 - 387/216 simplified gives 43/24
- So, 81/72 + 18/27 = 43/24
In mixed form: 119/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/72+36/27 81/72+18/54 81/72+54/27 81/72+18/81 81/72+90/27