Add 18/72 and 15/81
18/72 + 15/81 is 47/108.
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,
15/81 = 15 × 8/81 × 8 = 120/648 - Add the two like fractions:
162/648 + 120/648 = 162 + 120/648 = 282/648 - 282/648 simplified gives 47/108
- So, 18/72 + 15/81 = 47/108
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