Add 10/5 and 20/18
1st number: 2 0/5, 2nd number: 1 2/18
10/5 + 20/18 is 28/9.
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,
10/5 = 10 × 18/5 × 18 = 180/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
20/18 = 20 × 5/18 × 5 = 100/90 - Add the two like fractions:
180/90 + 100/90 = 180 + 100/90 = 280/90 - 280/90 simplified gives 28/9
- So, 10/5 + 20/18 = 28/9
In mixed form: 31/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/5+20/18 10/5+40/18 10/5+20/36 30/5+20/18 10/5+60/18 10/15+20/18 10/5+20/54 50/5+20/18 10/25+20/18 10/5+20/90 70/5+20/18 10/35+20/18