Solutions by everydaycalculation.com

1^{st} number: 3 11/15, 2^{nd} number: 4 18/20

5615 + 9820 is 25930.

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

LCM of 15 and 20 is**60**

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

5615 = 56 × 415 × 4 = 22460 - Likewise, for the 2nd fraction, since 20 × 3 = 60,

9820 = 98 × 320 × 3 = 29460 - Add the two like fractions:

22460 + 29460 = 224 + 29460 = 51860 - 518/60 simplified gives 25930
- So, 56/15 + 98/20 = 259/30

In mixed form: 81930

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