Add 72/36 and 81/18
1st number: 2 0/36, 2nd number: 4 9/18
72/36 + 81/18 is 13/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 18 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 36 × 1 = 36,
72/36 = 72 × 1/36 × 1 = 72/36 - Likewise, for the 2nd fraction, since 18 × 2 = 36,
81/18 = 81 × 2/18 × 2 = 162/36 - Add the two like fractions:
72/36 + 162/36 = 72 + 162/36 = 234/36 - 234/36 simplified gives 13/2
- So, 72/36 + 81/18 = 13/2
In mixed form: 61/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/36+81/36 72/36+81/54 72/36+81/90