Add 81/24 and 35/15, Solve 3 9/24 + 2 5/15 as a fraction

Add 81/24 and 35/15

1^st number: 3 9/24, 2^nd number: 2 5/15

81/24 + 35/15 is 137/24.

Find the least common denominator or LCM of the two denominators:
LCM of 24 and 15 is 120

Next, find the equivalent fraction of both fractional numbers with denominator 120
For the 1st fraction, since 24 × 5 = 120,
81/24 = 81 × 5/24 × 5 = 405/120
Likewise, for the 2nd fraction, since 15 × 8 = 120,
35/15 = 35 × 8/15 × 8 = 280/120
Add the two like fractions:
405/120 + 280/120 = 405 + 280/120 = 685/120
685/120 simplified gives 137/24
So, 81/24 + 35/15 = 137/24
In mixed form: 517/24

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