Add 18/3 and 21/56, Solve 6 0/3 + 21/56 as a fraction

Add 18/3 and 21/56

1^st number: 6 0/3, 2^nd number: 21/56

18/3 + 21/56 is 51/8.

Find the least common denominator or LCM of the two denominators:
LCM of 3 and 56 is 168

Next, find the equivalent fraction of both fractional numbers with denominator 168
For the 1st fraction, since 3 × 56 = 168,
18/3 = 18 × 56/3 × 56 = 1008/168
Likewise, for the 2nd fraction, since 56 × 3 = 168,
21/56 = 21 × 3/56 × 3 = 63/168
Add the two like fractions:
1008/168 + 63/168 = 1008 + 63/168 = 1071/168
1071/168 simplified gives 51/8
So, 18/3 + 21/56 = 51/8
In mixed form: 63/8

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