Add 4/5 and 81/18
1st number: 4/5, 2nd number: 4 9/18
4/5 + 81/18 is 53/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 5 × 18 = 90,
4/5 = 4 × 18/5 × 18 = 72/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
81/18 = 81 × 5/18 × 5 = 405/90 - Add the two like fractions:
72/90 + 405/90 = 72 + 405/90 = 477/90 - 477/90 simplified gives 53/10
- So, 4/5 + 81/18 = 53/10
In mixed form: 53/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/5+81/18 4/10+81/18 4/5+81/36 12/5+81/18 4/15+81/18 4/5+81/54 20/5+81/18 4/25+81/18 4/5+81/90 28/5+81/18 4/35+81/18