Add 18/36 and 81/40
1st number: 18/36, 2nd number: 2 1/40
18/36 + 81/40 is 101/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 36 × 10 = 360,
18/36 = 18 × 10/36 × 10 = 180/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
81/40 = 81 × 9/40 × 9 = 729/360 - Add the two like fractions:
180/360 + 729/360 = 180 + 729/360 = 909/360 - 909/360 simplified gives 101/40
- So, 18/36 + 81/40 = 101/40
In mixed form: 221/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/72+81/40 18/36+81/80 54/36+81/40 90/36+81/40