Add 8/72 and 3/81
8/72 + 3/81 is 4/27.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 81 is 648
Next, find the equivalent fraction of both fractional numbers with denominator 648 - For the 1st fraction, since 72 × 9 = 648,
8/72 = 8 × 9/72 × 9 = 72/648 - Likewise, for the 2nd fraction, since 81 × 8 = 648,
3/81 = 3 × 8/81 × 8 = 24/648 - Add the two like fractions:
72/648 + 24/648 = 72 + 24/648 = 96/648 - 96/648 simplified gives 4/27
- So, 8/72 + 3/81 = 4/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/72+3/81 8/72+6/81 24/72+3/81 8/72+9/81 40/72+3/81 8/72+15/81 56/72+3/81 8/72+21/81