Add 18/27 and 20/40
18/27 + 20/40 is 7/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 40 is 1080
Next, find the equivalent fraction of both fractional numbers with denominator 1080 - For the 1st fraction, since 27 × 40 = 1080,
18/27 = 18 × 40/27 × 40 = 720/1080 - Likewise, for the 2nd fraction, since 40 × 27 = 1080,
20/40 = 20 × 27/40 × 27 = 540/1080 - Add the two like fractions:
720/1080 + 540/1080 = 720 + 540/1080 = 1260/1080 - 1260/1080 simplified gives 7/6
- So, 18/27 + 20/40 = 7/6
In mixed form: 11/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/27+20/40 18/54+20/40 18/27+20/80 54/27+20/40 18/27+60/40 18/81+20/40 90/27+20/40