Add 20/8 and 20/18
1st number: 2 4/8, 2nd number: 1 2/18
20/8 + 20/18 is 65/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 18 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 18 × 4 = 72,
20/18 = 20 × 4/18 × 4 = 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 + 20/18 = 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+20/18 20/8+40/18 20/16+20/18 20/8+20/36 60/8+20/18 20/8+60/18 20/24+20/18 20/8+20/54 20/40+20/18 20/8+20/90 20/56+20/18