Add 16/72 and 1/81
16/72 + 1/81 is 19/81.
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,
16/72 = 16 × 9/72 × 9 = 144/648 - Likewise, for the 2nd fraction, since 81 × 8 = 648,
1/81 = 1 × 8/81 × 8 = 8/648 - Add the two like fractions:
144/648 + 8/648 = 144 + 8/648 = 152/648 - 152/648 simplified gives 19/81
- So, 16/72 + 1/81 = 19/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/72+1/81 16/72+2/81 48/72+1/81 16/72+3/81 80/72+1/81 16/72+5/81 16/72+7/81