Add 3/72 and 21/81
3/72 + 21/81 is 65/216.
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,
3/72 = 3 × 9/72 × 9 = 27/648 - Likewise, for the 2nd fraction, since 81 × 8 = 648,
21/81 = 21 × 8/81 × 8 = 168/648 - Add the two like fractions:
27/648 + 168/648 = 27 + 168/648 = 195/648 - 195/648 simplified gives 65/216
- So, 3/72 + 21/81 = 65/216
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