Add 16/12 and 20/42, Solve 1 4/12 + 20/42 as a fraction

Add 16/12 and 20/42

1^st number: 1 4/12, 2^nd number: 20/42

16/12 + 20/42 is 38/21.

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

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 12 × 7 = 84,
16/12 = 16 × 7/12 × 7 = 112/84
Likewise, for the 2nd fraction, since 42 × 2 = 84,
20/42 = 20 × 2/42 × 2 = 40/84
Add the two like fractions:
112/84 + 40/84 = 112 + 40/84 = 152/84
152/84 simplified gives 38/21
So, 16/12 + 20/42 = 38/21
In mixed form: 117/21

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