Add 63/2 and 15/21, Solve 31 1/2 + 15/21 as a fraction

Add 63/2 and 15/21

1^st number: 31 1/2, 2^nd number: 15/21

63/2 + 15/21 is 451/14.

Find the least common denominator or LCM of the two denominators:
LCM of 2 and 21 is 42

Next, find the equivalent fraction of both fractional numbers with denominator 42
For the 1st fraction, since 2 × 21 = 42,
63/2 = 63 × 21/2 × 21 = 1323/42
Likewise, for the 2nd fraction, since 21 × 2 = 42,
15/21 = 15 × 2/21 × 2 = 30/42
Add the two like fractions:
1323/42 + 30/42 = 1323 + 30/42 = 1353/42
1353/42 simplified gives 451/14
So, 63/2 + 15/21 = 451/14
In mixed form: 323/14

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