Add 6/21 and 63/4, Solve 6/21 + 15 3/4 as a fraction

Add 6/21 and 63/4

1^st number: 6/21, 2^nd number: 15 3/4

6/21 + 63/4 is 449/28.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 4 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 21 × 4 = 84,
6/21 = 6 × 4/21 × 4 = 24/84
Likewise, for the 2nd fraction, since 4 × 21 = 84,
63/4 = 63 × 21/4 × 21 = 1323/84
Add the two like fractions:
24/84 + 1323/84 = 24 + 1323/84 = 1347/84
1347/84 simplified gives 449/28
So, 6/21 + 63/4 = 449/28
In mixed form: 161/28

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