Add 20/8 and 7/18
1st number: 2 4/8, 2nd number: 7/18
20/8 + 7/18 is 26/9.
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,
7/18 = 7 × 4/18 × 4 = 28/72 - Add the two like fractions:
180/72 + 28/72 = 180 + 28/72 = 208/72 - 208/72 simplified gives 26/9
- So, 20/8 + 7/18 = 26/9
In mixed form: 28/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/8+7/18 20/8+14/18 20/16+7/18 20/8+7/36 60/8+7/18 20/8+21/18 20/24+7/18 20/8+7/54 20/8+35/18 20/40+7/18 20/8+7/90 20/8+49/18 20/56+7/18