Add 27/18 and 20/80
1st number: 1 9/18, 2nd number: 20/80
27/18 + 20/80 is 7/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 18 × 40 = 720,
27/18 = 27 × 40/18 × 40 = 1080/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
20/80 = 20 × 9/80 × 9 = 180/720 - Add the two like fractions:
1080/720 + 180/720 = 1080 + 180/720 = 1260/720 - 1260/720 simplified gives 7/4
- So, 27/18 + 20/80 = 7/4
In mixed form: 13/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/18+20/80 27/18+40/80 27/36+20/80 81/18+20/80 27/18+60/80 27/54+20/80 27/90+20/80