Solutions by everydaycalculation.com

1^{st} number: 1 27/45, 2^{nd} number: 2 5/20

7245 + 4520 is 7720.

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

LCM of 45 and 20 is**180**

Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,

7245 = 72 × 445 × 4 = 288180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,

4520 = 45 × 920 × 9 = 405180 - Add the two like fractions:

288180 + 405180 = 288 + 405180 = 693180 - 693/180 simplified gives 7720
- So, 72/45 + 45/20 = 77/20

In mixed form: 31720

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