Solutions by everydaycalculation.com

1^{st} number: 40/81, 2^{nd} number: 1 7/20

4081 + 2720 is 29871620.

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

LCM of 81 and 20 is**1620**

Next, find the equivalent fraction of both fractional numbers with denominator 1620 - For the 1st fraction, since 81 × 20 = 1620,

4081 = 40 × 2081 × 20 = 8001620 - Likewise, for the 2nd fraction, since 20 × 81 = 1620,

2720 = 27 × 8120 × 81 = 21871620 - Add the two like fractions:

8001620 + 21871620 = 800 + 21871620 = 29871620 - So, 40/81 + 27/20 = 2987/1620

In mixed form: 113671620

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