Add 40/18 and 81/72
1st number: 2 4/18, 2nd number: 1 9/72
40/18 + 81/72 is 241/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 18 × 4 = 72,
40/18 = 40 × 4/18 × 4 = 160/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
81/72 = 81 × 1/72 × 1 = 81/72 - Add the two like fractions:
160/72 + 81/72 = 160 + 81/72 = 241/72 - So, 40/18 + 81/72 = 241/72
In mixed form: 325/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/18+81/72 40/36+81/72 40/54+81/72 40/90+81/72