Add 12/72 and 35/81
12/72 + 35/81 is 97/162.
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,
12/72 = 12 × 9/72 × 9 = 108/648 - Likewise, for the 2nd fraction, since 81 × 8 = 648,
35/81 = 35 × 8/81 × 8 = 280/648 - Add the two like fractions:
108/648 + 280/648 = 108 + 280/648 = 388/648 - 388/648 simplified gives 97/162
- So, 12/72 + 35/81 = 97/162
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/72+35/81 12/72+70/81 36/72+35/81 60/72+35/81 84/72+35/81