Add 12/81 and 49/72
12/81 + 49/72 is 179/216.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 72 is 648
Next, find the equivalent fraction of both fractional numbers with denominator 648 - For the 1st fraction, since 81 × 8 = 648,
12/81 = 12 × 8/81 × 8 = 96/648 - Likewise, for the 2nd fraction, since 72 × 9 = 648,
49/72 = 49 × 9/72 × 9 = 441/648 - Add the two like fractions:
96/648 + 441/648 = 96 + 441/648 = 537/648 - 537/648 simplified gives 179/216
- So, 12/81 + 49/72 = 179/216
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/81+49/72 12/81+98/72 36/81+49/72 60/81+49/72 84/81+49/72