Solutions by everydaycalculation.com

1^{st} number: 5 6/15, 2^{nd} number: 2 3/12

8115 + 2712 is 15320.

- Find the least common denominator or LCM of the two denominators:

LCM of 15 and 12 is**60**

Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 15 × 4 = 60,

8115 = 81 × 415 × 4 = 32460 - Likewise, for the 2nd fraction, since 12 × 5 = 60,

2712 = 27 × 512 × 5 = 13560 - Add the two like fractions:

32460 + 13560 = 324 + 13560 = 45960 - 459/60 simplified gives 15320
- So, 81/15 + 27/12 = 153/20

In mixed form: 71320

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