Add 81/45 and 42/81, Solve 1 36/45 + 42/81 as a fraction

Add 81/45 and 42/81

1^st number: 1 36/45, 2^nd number: 42/81

81/45 + 42/81 is 313/135.

Find the least common denominator or LCM of the two denominators:
LCM of 45 and 81 is 405

Next, find the equivalent fraction of both fractional numbers with denominator 405
For the 1st fraction, since 45 × 9 = 405,
81/45 = 81 × 9/45 × 9 = 729/405
Likewise, for the 2nd fraction, since 81 × 5 = 405,
42/81 = 42 × 5/81 × 5 = 210/405
Add the two like fractions:
729/405 + 210/405 = 729 + 210/405 = 939/405
939/405 simplified gives 313/135
So, 81/45 + 42/81 = 313/135
In mixed form: 243/135

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