Add 84/25 and 6/21, Solve 3 9/25 + 6/21 as a fraction

Add 84/25 and 6/21

1^st number: 3 9/25, 2^nd number: 6/21

84/25 + 6/21 is 638/175.

Find the least common denominator or LCM of the two denominators:
LCM of 25 and 21 is 525

Next, find the equivalent fraction of both fractional numbers with denominator 525
For the 1st fraction, since 25 × 21 = 525,
84/25 = 84 × 21/25 × 21 = 1764/525
Likewise, for the 2nd fraction, since 21 × 25 = 525,
6/21 = 6 × 25/21 × 25 = 150/525
Add the two like fractions:
1764/525 + 150/525 = 1764 + 150/525 = 1914/525
1914/525 simplified gives 638/175
So, 84/25 + 6/21 = 638/175
In mixed form: 3113/175

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