Add 84/72 and 42/81
1st number: 1 12/72, 2nd number: 42/81
84/72 + 42/81 is 91/54.
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,
84/72 = 84 × 9/72 × 9 = 756/648 - Likewise, for the 2nd fraction, since 81 × 8 = 648,
42/81 = 42 × 8/81 × 8 = 336/648 - Add the two like fractions:
756/648 + 336/648 = 756 + 336/648 = 1092/648 - 1092/648 simplified gives 91/54
- So, 84/72 + 42/81 = 91/54
In mixed form: 137/54
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Related: 84/72+84/81