Add 15/81 and 40/7, Solve 15/81 + 5 5/7 as a fraction

Add 15/81 and 40/7

1^st number: 15/81, 2^nd number: 5 5/7

15/81 + 40/7 is 1115/189.

Find the least common denominator or LCM of the two denominators:
LCM of 81 and 7 is 567

Next, find the equivalent fraction of both fractional numbers with denominator 567
For the 1st fraction, since 81 × 7 = 567,
15/81 = 15 × 7/81 × 7 = 105/567
Likewise, for the 2nd fraction, since 7 × 81 = 567,
40/7 = 40 × 81/7 × 81 = 3240/567
Add the two like fractions:
105/567 + 3240/567 = 105 + 3240/567 = 3345/567
3345/567 simplified gives 1115/189
So, 15/81 + 40/7 = 1115/189
In mixed form: 5170/189

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