Add 18/72 and 70/81
18/72 + 70/81 is 361/324.
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,
18/72 = 18 × 9/72 × 9 = 162/648 - Likewise, for the 2nd fraction, since 81 × 8 = 648,
70/81 = 70 × 8/81 × 8 = 560/648 - Add the two like fractions:
162/648 + 560/648 = 162 + 560/648 = 722/648 - 722/648 simplified gives 361/324
- So, 18/72 + 70/81 = 361/324
In mixed form: 137/324
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