Solutions by everydaycalculation.com

1^{st} number: 2 12/21, 2^{nd} number: 25/42

5421 + 2542 is 196.

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

LCM of 21 and 42 is**42**

Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 21 × 2 = 42,

5421 = 54 × 221 × 2 = 10842 - Likewise, for the 2nd fraction, since 42 × 1 = 42,

2542 = 25 × 142 × 1 = 2542 - Add the two like fractions:

10842 + 2542 = 108 + 2542 = 13342 - 133/42 simplified gives 196
- So, 54/21 + 25/42 = 19/6

In mixed form: 316

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