Add 63/42 and 8/12, Solve 1 21/42 + 8/12 as a fraction

Add 63/42 and 8/12

1^st number: 1 21/42, 2^nd number: 8/12

63/42 + 8/12 is 13/6.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 12 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 42 × 2 = 84,
63/42 = 63 × 2/42 × 2 = 126/84
Likewise, for the 2nd fraction, since 12 × 7 = 84,
8/12 = 8 × 7/12 × 7 = 56/84
Add the two like fractions:
126/84 + 56/84 = 126 + 56/84 = 182/84
182/84 simplified gives 13/6
So, 63/42 + 8/12 = 13/6
In mixed form: 21/6

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