Add 18/27 and 21/80
18/27 + 21/80 is 223/240.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 80 is 2160
Next, find the equivalent fraction of both fractional numbers with denominator 2160 - For the 1st fraction, since 27 × 80 = 2160,
18/27 = 18 × 80/27 × 80 = 1440/2160 - Likewise, for the 2nd fraction, since 80 × 27 = 2160,
21/80 = 21 × 27/80 × 27 = 567/2160 - Add the two like fractions:
1440/2160 + 567/2160 = 1440 + 567/2160 = 2007/2160 - 2007/2160 simplified gives 223/240
- So, 18/27 + 21/80 = 223/240
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/27+21/80 18/27+42/80 18/54+21/80 54/27+21/80 18/27+63/80 18/81+21/80 90/27+21/80