Add 81/4 and 18/27
1st number: 20 1/4, 2nd number: 18/27
81/4 + 18/27 is 251/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 27 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 4 × 27 = 108,
81/4 = 81 × 27/4 × 27 = 2187/108 - Likewise, for the 2nd fraction, since 27 × 4 = 108,
18/27 = 18 × 4/27 × 4 = 72/108 - Add the two like fractions:
2187/108 + 72/108 = 2187 + 72/108 = 2259/108 - 2259/108 simplified gives 251/12
- So, 81/4 + 18/27 = 251/12
In mixed form: 2011/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/4+36/27 81/8+18/27 81/4+18/54 81/4+54/27 81/12+18/27 81/4+18/81 81/4+90/27 81/20+18/27 81/28+18/27