Add 45/72 and 35/81
45/72 + 35/81 is 685/648.
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,
45/72 = 45 × 9/72 × 9 = 405/648 - Likewise, for the 2nd fraction, since 81 × 8 = 648,
35/81 = 35 × 8/81 × 8 = 280/648 - Add the two like fractions:
405/648 + 280/648 = 405 + 280/648 = 685/648 - So, 45/72 + 35/81 = 685/648
In mixed form: 137/648
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