Add 81/42 and 40/81, Solve 1 39/42 + 40/81 as a fraction

Add 81/42 and 40/81

1^st number: 1 39/42, 2^nd number: 40/81

81/42 + 40/81 is 2747/1134.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 81 is 1134

Next, find the equivalent fraction of both fractional numbers with denominator 1134
For the 1st fraction, since 42 × 27 = 1134,
81/42 = 81 × 27/42 × 27 = 2187/1134
Likewise, for the 2nd fraction, since 81 × 14 = 1134,
40/81 = 40 × 14/81 × 14 = 560/1134
Add the two like fractions:
2187/1134 + 560/1134 = 2187 + 560/1134 = 2747/1134
So, 81/42 + 40/81 = 2747/1134
In mixed form: 2479/1134

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