Add 54/72 and 90/81
1st number: 54/72, 2nd number: 1 9/81
54/72 + 90/81 is 67/36.
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,
54/72 = 54 × 9/72 × 9 = 486/648 - Likewise, for the 2nd fraction, since 81 × 8 = 648,
90/81 = 90 × 8/81 × 8 = 720/648 - Add the two like fractions:
486/648 + 720/648 = 486 + 720/648 = 1206/648 - 1206/648 simplified gives 67/36
- So, 54/72 + 90/81 = 67/36
In mixed form: 131/36
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