Add 81/60 and 84/81
1st number: 1 21/60, 2nd number: 1 3/81
81/60 + 84/81 is 1289/540.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 81 is 1620
Next, find the equivalent fraction of both fractional numbers with denominator 1620 - For the 1st fraction, since 60 × 27 = 1620,
81/60 = 81 × 27/60 × 27 = 2187/1620 - Likewise, for the 2nd fraction, since 81 × 20 = 1620,
84/81 = 84 × 20/81 × 20 = 1680/1620 - Add the two like fractions:
2187/1620 + 1680/1620 = 2187 + 1680/1620 = 3867/1620 - 3867/1620 simplified gives 1289/540
- So, 81/60 + 84/81 = 1289/540
In mixed form: 2209/540
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