Add 12/18 and 63/21, Solve 12/18 + 3 0/21 as a fraction

Add 12/18 and 63/21

1^st number: 12/18, 2^nd number: 3 0/21

12/18 + 63/21 is 11/3.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 21 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 18 × 7 = 126,
12/18 = 12 × 7/18 × 7 = 84/126
Likewise, for the 2nd fraction, since 21 × 6 = 126,
63/21 = 63 × 6/21 × 6 = 378/126
Add the two like fractions:
84/126 + 378/126 = 84 + 378/126 = 462/126
462/126 simplified gives 11/3
So, 12/18 + 63/21 = 11/3
In mixed form: 32/3

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