Add 5/12 and 84/63, Solve 5/12 + 1 21/63 as a fraction

Add 5/12 and 84/63

1^st number: 5/12, 2^nd number: 1 21/63

5/12 + 84/63 is 7/4.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 63 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 12 × 21 = 252,
5/12 = 5 × 21/12 × 21 = 105/252
Likewise, for the 2nd fraction, since 63 × 4 = 252,
84/63 = 84 × 4/63 × 4 = 336/252
Add the two like fractions:
105/252 + 336/252 = 105 + 336/252 = 441/252
441/252 simplified gives 7/4
So, 5/12 + 84/63 = 7/4
In mixed form: 13/4

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