Add 18/27 and 40/20
1st number: 18/27, 2nd number: 2 0/20
18/27 + 40/20 is 8/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 20 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 27 × 20 = 540,
18/27 = 18 × 20/27 × 20 = 360/540 - Likewise, for the 2nd fraction, since 20 × 27 = 540,
40/20 = 40 × 27/20 × 27 = 1080/540 - Add the two like fractions:
360/540 + 1080/540 = 360 + 1080/540 = 1440/540 - 1440/540 simplified gives 8/3
- So, 18/27 + 40/20 = 8/3
In mixed form: 22/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/27+40/20 18/27+80/20 18/54+40/20 54/27+40/20 18/81+40/20 18/27+40/60 90/27+40/20