Add 81/18 and 1/5
1st number: 4 9/18, 2nd number: 1/5
81/18 + 1/5 is 47/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 5 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
81/18 = 81 × 5/18 × 5 = 405/90 - Likewise, for the 2nd fraction, since 5 × 18 = 90,
1/5 = 1 × 18/5 × 18 = 18/90 - Add the two like fractions:
405/90 + 18/90 = 405 + 18/90 = 423/90 - 423/90 simplified gives 47/10
- So, 81/18 + 1/5 = 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: 81/18+2/5 81/36+1/5 81/18+1/10 81/18+3/5 81/54+1/5 81/18+1/15 81/90+1/5 81/18+1/25 81/18+7/5 81/18+1/35