Add 36/18 and 81/30
1st number: 2 0/18, 2nd number: 2 21/30
36/18 + 81/30 is 47/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 30 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
36/18 = 36 × 5/18 × 5 = 180/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
81/30 = 81 × 3/30 × 3 = 243/90 - Add the two like fractions:
180/90 + 243/90 = 180 + 243/90 = 423/90 - 423/90 simplified gives 47/10
- So, 36/18 + 81/30 = 47/10
In mixed form: 47/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/18+81/30 36/18+81/60 36/54+81/30 36/18+81/90 36/90+81/30