Add 20/72 and 9/27
20/72 + 9/27 is 11/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 27 is 216
Next, find the equivalent fraction of both fractional numbers with denominator 216 - For the 1st fraction, since 72 × 3 = 216,
20/72 = 20 × 3/72 × 3 = 60/216 - Likewise, for the 2nd fraction, since 27 × 8 = 216,
9/27 = 9 × 8/27 × 8 = 72/216 - Add the two like fractions:
60/216 + 72/216 = 60 + 72/216 = 132/216 - 132/216 simplified gives 11/18
- So, 20/72 + 9/27 = 11/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/72+9/27 20/72+18/27 20/72+9/54 60/72+9/27 20/72+9/81 20/72+45/27 20/72+63/27