Add 63/18 and 21/56, Solve 3 9/18 + 21/56 as a fraction

Add 63/18 and 21/56

1^st number: 3 9/18, 2^nd number: 21/56

63/18 + 21/56 is 31/8.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 56 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 18 × 28 = 504,
63/18 = 63 × 28/18 × 28 = 1764/504
Likewise, for the 2nd fraction, since 56 × 9 = 504,
21/56 = 21 × 9/56 × 9 = 189/504
Add the two like fractions:
1764/504 + 189/504 = 1764 + 189/504 = 1953/504
1953/504 simplified gives 31/8
So, 63/18 + 21/56 = 31/8
In mixed form: 37/8

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