Add 18/84 and 20/27
18/84 + 20/27 is 361/378.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 27 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 84 × 9 = 756,
18/84 = 18 × 9/84 × 9 = 162/756 - Likewise, for the 2nd fraction, since 27 × 28 = 756,
20/27 = 20 × 28/27 × 28 = 560/756 - Add the two like fractions:
162/756 + 560/756 = 162 + 560/756 = 722/756 - 722/756 simplified gives 361/378
- So, 18/84 + 20/27 = 361/378
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/84+20/27 18/84+40/27 18/84+20/54 54/84+20/27 18/84+60/27 18/84+20/81 90/84+20/27