Add 14/72 and 70/81
14/72 + 70/81 is 343/324.
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,
14/72 = 14 × 9/72 × 9 = 126/648 - Likewise, for the 2nd fraction, since 81 × 8 = 648,
70/81 = 70 × 8/81 × 8 = 560/648 - Add the two like fractions:
126/648 + 560/648 = 126 + 560/648 = 686/648 - 686/648 simplified gives 343/324
- So, 14/72 + 70/81 = 343/324
In mixed form: 119/324
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/72+70/81 42/72+70/81 70/72+70/81 98/72+70/81