Solutions by everydaycalculation.com

1^{st} number: 21/84, 2^{nd} number: 3 5/10

2184 + 3510 is 154.

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

LCM of 84 and 10 is**420**

Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,

2184 = 21 × 584 × 5 = 105420 - Likewise, for the 2nd fraction, since 10 × 42 = 420,

3510 = 35 × 4210 × 42 = 1470420 - Add the two like fractions:

105420 + 1470420 = 105 + 1470420 = 1575420 - 1575/420 simplified gives 154
- So, 21/84 + 35/10 = 15/4

In mixed form: 334

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