Add 16/12 and 15/21, Solve 1 4/12 + 15/21 as a fraction

Add 16/12 and 15/21

1^st number: 1 4/12, 2^nd number: 15/21

16/12 + 15/21 is 43/21.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 21 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 21 × 4 = 84,
15/21 = 15 × 4/21 × 4 = 60/84
Add the two like fractions:
112/84 + 60/84 = 112 + 60/84 = 172/84
172/84 simplified gives 43/21
So, 16/12 + 15/21 = 43/21
In mixed form: 21/21

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