Solutions by everydaycalculation.com

1821 + 2584 is 9784.

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

LCM of 21 and 84 is**84**

Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,

1821 = 18 × 421 × 4 = 7284 - Likewise, for the 2nd fraction, since 84 × 1 = 84,

2584 = 25 × 184 × 1 = 2584 - Add the two like fractions:

7284 + 2584 = 72 + 2584 = 9784 - So, 18/21 + 25/84 = 97/84

In mixed form: 11384

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