Add 20/8 and 10/9
1st number: 2 4/8, 2nd number: 1 1/9
20/8 + 10/9 is 65/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 9 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 8 × 9 = 72,
20/8 = 20 × 9/8 × 9 = 180/72 - Likewise, for the 2nd fraction, since 9 × 8 = 72,
10/9 = 10 × 8/9 × 8 = 80/72 - Add the two like fractions:
180/72 + 80/72 = 180 + 80/72 = 260/72 - 260/72 simplified gives 65/18
- So, 20/8 + 10/9 = 65/18
In mixed form: 311/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/8+10/9 20/8+20/9 20/16+10/9 20/8+10/18 60/8+10/9 20/8+30/9 20/24+10/9 20/8+10/27 20/8+50/9 20/40+10/9 20/8+10/45 20/8+70/9 20/56+10/9 20/8+10/63