Add 8/72 and 7/81
8/72 + 7/81 is 16/81.
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,
8/72 = 8 × 9/72 × 9 = 72/648 - Likewise, for the 2nd fraction, since 81 × 8 = 648,
7/81 = 7 × 8/81 × 8 = 56/648 - Add the two like fractions:
72/648 + 56/648 = 72 + 56/648 = 128/648 - 128/648 simplified gives 16/81
- So, 8/72 + 7/81 = 16/81
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