Add 21/14 and 14/12, Solve 1 7/14 + 1 2/12 as a fraction

Add 21/14 and 14/12

1^st number: 1 7/14, 2^nd number: 1 2/12

21/14 + 14/12 is 8/3.

Find the least common denominator or LCM of the two denominators:
LCM of 14 and 12 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 14 × 6 = 84,
21/14 = 21 × 6/14 × 6 = 126/84
Likewise, for the 2nd fraction, since 12 × 7 = 84,
14/12 = 14 × 7/12 × 7 = 98/84
Add the two like fractions:
126/84 + 98/84 = 126 + 98/84 = 224/84
224/84 simplified gives 8/3
So, 21/14 + 14/12 = 8/3
In mixed form: 22/3

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